by Ariful | Mar 17, 2026 | UK Accounting
1. Transferring Assets Without a Professional Valuation
Many business owners start as sole traders and eventually “level up” to a Limited Company structure. In 2026, we are seeing a surge in entrepreneurs moving inventory, intellectual property, or even property into their new company entities.
The mistake? Doing it based on “gut feel” or historical cost rather than current market value. If you transfer an asset into your company at the wrong valuation, you could trigger an immediate Capital Gains Tax (CGT) liability. This is a major trap for e-commerce brands moving large amounts of stock or proprietary software assets.
The Fix:
Always ensure assets are professionally valued before the transfer. Document the process thoroughly. By getting a formal valuation, you establish a clear paper trail that protects you if HMRC ever decides to audit your incorporation. If you’re unsure about the numbers, it is better to pause and get it right than to face a tax bill you didn’t budget for.
2. Ignoring the New 2026 Late Filing Penalty Regime
As of April 1, 2026, HMRC is implementing a stricter penalty regime for late Corporation Tax (CT600) filings. In the past, some directors viewed the £100 fine as a “late fee” they could live with. That era is over.
The new system is designed to penalize repeat offenders more harshly. If you miss your deadline, usually 12 months after your accounting period ends, you face an immediate penalty, and interest on any unpaid tax starts accruing at rates much higher than we saw in previous decades.
The Fix:
Don’t treat your filing date as a suggestion. Mark your “soft deadline” three months before the actual due date. If you use a compliance partner like Sterlinx Global, ensure your data is uploaded to us monthly. This allows us to calculate your liabilities well in advance, so there are no surprises come filing day. You can stay ahead of these changes by regularly checking the UK Updates (HMRC) section.
3. “DIY” Making Tax Digital (MTD) Setup Errors
Making Tax Digital for Corporation Tax is now the standard. However, many e-commerce sellers try to handle the software integration themselves. We often see businesses with “broken digital links.” This happens when you manually move data from your Amazon or Shopify dashboard into an Excel sheet and then manually upload it to your accounting software.
HMRC requires a “digital link” from the point of entry to the final submission. If that link is broken by manual data entry, your submission is technically non-compliant, even if the numbers are correct.
The Fix:
Automate your data flow. Use direct integrations between your sales platforms and your accounting suite. This is where Sterlinx Global excels, we handle the end-to-end compliance delivery. You provide the raw data access, and we ensure the digital links remain intact all the way to HMRC’s servers.
4. Setting Up a Generic “100 Ordinary Shares” Structure
When you first form a company, it’s easy to just tick the box for 100 ordinary shares. However, by 2026, your business might have grown to include family members, key employees, or investors.
The mistake is trying to change this structure “on the fly” without understanding the tax implications. Issuing shares to a spouse or employee after the company has gained significant value can be seen as a form of income or a taxable gift, leading to unexpected Income Tax or National Insurance hits.
The Fix:
Think about your share structure from day zero. If you missed that boat, don’t just issue new shares. Talk to a specialist about the most tax-efficient way to restructure. Proper planning now can save you thousands in future dividends and capital gains.
5. Using Your Home Address as Your Registered Office
Privacy is a growing concern in 2026. Many new directors register their home address as the company’s registered office to save on costs. What they don’t realize is that this information becomes public record on Companies House. Anyone, customers, competitors, or cold callers, can find out where you live with a simple search.
Beyond privacy, it also looks less professional to international partners or lenders. If you’re looking at expanding your business globally, a commercial address carries more weight.
The Fix:
Use a professional Service Address or Registered Office service. Many accounting firms and formation agents provide this. It keeps your personal life private and ensures all official HMRC and Companies House mail is handled in a professional environment.
6. Failing to Track “Associated Companies”
HMRC has become incredibly strict about “associated companies” in 2026. If you have control over more than one company, or if your close family members do, these companies may be considered “associated.”
Why does this matter? It reduces the thresholds for Corporation Tax rates. Instead of enjoying the lower tax rate on your first £50,000 of profit, that threshold is divided by the number of associated companies. If you have three companies, your lower-rate threshold drops significantly. Failing to declare these can lead to underpaid tax and heavy “failure to notify” penalties.
The Fix:
Conduct an annual review of your corporate structure. If you’ve started a new side hustle or a property holding company, let your accountant know immediately. We need to factor this into your tax accounting to ensure your tax brackets are calculated correctly.
7. Poor Documentation of Beneficial Ownership
HMRC and Companies House have increased their scrutiny of “People with Significant Control” (PSC). In 2026, simply listing a name isn’t enough. You must maintain clear records of beneficial ownership, especially if your company is part of a complex structure involving overseas entities or trusts.
For e-commerce sellers with international setups (like a UK Ltd owned by a US LLC), this is a high-risk area for compliance audits.
The Fix:
Keep a dedicated PSC register and update it the moment ownership changes by more than 25%. Ensure your filings at Companies House match your internal records exactly. If you are operating across borders, check our guides on international tax structures to see how ownership affects your international registrations.
Why Compliance is Your Best Growth Strategy
It is tempting to view tax filing as a burden, but in 2026, it is actually your greatest competitive advantage. The businesses that stay ahead of compliance are the ones that avoid penalties, maintain clean audit trails, and have the financial clarity to scale confidently.
These seven mistakes are avoidable. The fix doesn’t require you to become a tax expert, just to partner with people who are. At Sterlinx Global Ltd, we’ve helped hundreds of UK Limited Companies sidestep these pitfalls. From asset valuations to PSC management, we handle the complexity so you can focus on what you do best: running your business.
If you recognize any of these issues in your own setup, don’t wait until the next HMRC notice lands. Get in touch with our team today for a no-obligation compliance review.
by Ariful | Mar 17, 2026 | UK Updates
The April 2026 Threshold: Are You on the List?
From April 2026, MTD for Income Tax becomes mandatory for self-employed individuals and landlords with a qualifying income of over £50,000. If your income falls between £30,000 and £50,000, you have until April 2027, but for high-earning entrepreneurs and property investors, the deadline is effectively today.
You might ask, “I run a Limited Company, does this apply to me?”
If you are a director who also receives rental income from properties or has side-hustle income (common in the e-commerce world) that exceeds that £50k threshold, you are personally required to comply. HMRC is moving away from the “once-a-year” tax return and moving toward a real-time, quarterly reporting cycle.
The Death of the Annual Tax Return
The traditional January 31st scramble is being replaced by a rigorous “Quarterly Update” system. Under the new rules, you must:
- Keep digital records of all business transactions.
- Use HMRC-compatible software to send quarterly updates.
- Submit an “End of Period Statement” (EOPS) and a final declaration.
This means instead of one major interaction with HMRC per year, you are looking at at least five. For a busy director, this is a massive administrative burden if you don’t have the right compliance systems handling the data flow for you.
Why Limited Companies Can’t Afford to Ignore This
While the April 2026 update specifically targets Income Tax, it serves as the blueprint for MTD for Corporation Tax, which is looming on the horizon. More urgently, HMRC has confirmed that from April 2027, reporting for Benefits in Kind (BiK), such as company cars, health insurance, and gym memberships, must be done digitally through payroll software.
The days of filing P11D forms at the end of the year are ending. If your Limited Company provides any perks to its employees or directors, you need to transition your bookkeeping to a real-time environment now. Waiting until 2027 to “fix” your processes will result in administrative chaos and potential penalties.
The E-commerce Impact: High Volume, High Risk
For e-commerce brands, these updates are particularly sharp. If you are selling across platforms like Amazon or Shopify, your transaction volume is likely high. HMRC is increasingly using data-matching technology to cross-reference digital platform sales with tax filings.
Managing multiple VAT registrations or handling Pan-European VAT is already a full-time job. Adding quarterly digital reporting for your UK income means you can no longer rely on spreadsheets. You need a system where data flows directly from your sales channels into your compliance engine.
Step-by-Step: Preparing Your Business for the Update
Don’t worry; the transition is manageable if you break it down into actionable steps. A “structured accounting” approach will ensure no deadlines are missed.
1. Audit Your Income Streams
Review your total qualifying income. Remember, this isn’t just your salary; it’s your total self-employed turnover plus any gross rental income. If the total exceeds £50,000, you are in the first wave of the April 2026 mandate.
2. Ditch the Spreadsheets
HMRC requires “digital links.” This means you cannot manually copy and paste data from one spreadsheet to another. The information must flow digitally from the point of entry to the final submission. If you haven’t already, now is the time to integrate your bank feeds and sales platforms with professional accounting software.
3. Review Your Benefits in Kind
Start looking at how you provide benefits to your staff. Are you ready to report these monthly through payroll instead of annually? Transitioning your BiK reporting early will save you a massive headache in 2027.
4. Partner with a Compliance Suite
The most effective way to handle this is to stop thinking of tax as a “year-end” event. By moving to a digital-first approach, you can ensure your digital records are HMRC-compliant every single day. Whether it’s bookkeeping, VAT filings, or year-end accounts, ongoing compliance management ensures you meet all obligations.
Cross-Border Considerations
If your UK Limited Company is part of a larger international structure, perhaps you have operations in Canada or the USA, the digital reporting update adds another layer of complexity to your cross-border currency and financial management.
HMRC is looking for transparency. By moving to a digital reporting model, they can more easily see international transfers and transfer pricing. Keeping your UK company’s digital house in order is the first line of defense in an audit.
The Benefit of Being Early
Compliance isn’t just about avoiding fines (though that is a huge motivator). The “Making Tax Digital” initiative is designed to reduce manual errors. HMRC estimates that billions of pounds are lost annually due to simple bookkeeping mistakes. By adopting digital reporting, you get:
- Better Visibility: You see your tax liability in real-time, rather than being surprised by a bill 18 months later.
- Efficiency: Automated data entry reduces the hours spent on admin.
- Scalability: A digitally-compliant business is much easier to scale or sell than one with a shoebox full of receipts.
Checklist: Is Your Limited Company Ready?
- Identify Mandated Individuals: Have you identified which directors or shareholders meet the £50k income threshold?
- Software Compatibility: Is your current accounting software “HMRC-Compatible” for MTD ITSA?
- Digital Linkage: Do you have manual data entry points that need to be automated?
- Benefits in Kind: Have you reviewed how your company will report BiK from April 2027?
- Quarterly Readiness: Can you produce quarterly updates with your current systems?
- Professional Support: Do you have a compliance partner ready to manage ongoing filings?
by Ariful | Mar 17, 2026 | US Updates
Expanding your UK business into the United States is one of the most exciting growth leaps you can take. With a consumer market that dwarfs the UK, the potential for scale is massive. However, as we move into 2026, the US tax landscape has become significantly more complex for international sellers. The Internal Revenue Service (IRS) and individual state Departments of Revenue have ramped up digital tracking and enforcement, meaning the “head in the sand” approach no longer works.
At Sterlinx Global Ltd, we see many ambitious UK brands hit unnecessary roadblocks because they applied “UK logic” to a “US system.” To help you navigate this, we’ve outlined the seven most common mistakes UK sellers make with 2026 US tax compliance and, more importantly, how you can fix them before they cost you your margins.
1. The “I’m in the UK, so I don’t owe US Tax” Myth
The mistake: Many UK directors believe that because their company is registered in Companies House and they have no physical office in the US, they are outside the reach of the US taxman.
The reality: In 2026, physical borders matter less than digital footprints. If you sell to US customers, you are likely creating “Nexus”: a legal connection that gives a state the right to tax you. US authorities now use advanced data-sharing agreements with marketplaces and shipping carriers to identify high-volume overseas sellers.
The fix: Acknowledge that US tax obligations are based on where your customers are, not where your desk is. You must actively monitor your sales activity against the specific thresholds of each US state. Don’t wait for a “nexus discovery” letter; be proactive.
2. Misunderstanding the “Economic Nexus” Trigger
The mistake: UK sellers often think they only need to worry about tax if they have a warehouse or employees in America.
The reality: While physical presence is a trigger, Economic Nexus is the more common trap. Most states have a threshold: typically $100,000 in gross sales or 200 separate transactions within a calendar year. If you cross that line in a state like California or New York, you are legally required to register and collect sales tax.
The fix: Implement a tracking system that monitors your transaction count and revenue per state in real-time. Since 2026 regulations have tightened, even one dollar over the threshold can trigger back-dated liabilities. If you are unsure how to track this across 50 different jurisdictions, talk to an expert who can automate this for you.
3. Delaying Registration After Crossing the Threshold
The mistake: Thinking, “I’ll just wait until the end of the year to sort out my US taxes.”
The reality: US sales tax is not a “year-end” activity. Once you hit a nexus threshold, you are often required to register and start collecting tax within 30 to 60 days. If you continue selling without registering, you are effectively “stealing” the tax from the state. When you eventually do register, the state may demand the tax you should have collected out of your own pocket, plus hefty interest and penalties.
The fix: Register in each applicable state the moment you anticipate hitting the threshold. Keep in mind that as a UK resident, you may need a US Individual Taxpayer Identification Number (ITIN) or an Employer Identification Number (EIN) for your business. This process can take weeks, so start early.
4. Treating the US Like One Single Market
The mistake: Assuming US tax works like the UK, where there is one flat VAT rate and one central authority (HMRC).
The reality: The US has no national VAT. Instead, it has over 11,000 different local tax jurisdictions. Each of the 50 states has its own rules, filing frequencies (monthly, quarterly, or annual), and deadlines. Some states want your return by the 15th of the month; others by the 20th or 23rd. Missing a “zero return” (a filing where you owe $0) can still result in a $50–$100 penalty per state.
The fix: Stop viewing the US as one country for tax purposes. Treat it as 50 different countries. You need a dedicated tax calendar or a compliance partner like Sterlinx Global to manage these varying deadlines. Managing cross-border currency and finances is hard enough; don’t add manual tax tracking to your plate.
5. Confusing US Sales Tax with UK VAT
The mistake: Thinking that paying US Sales Tax exempts you from UK obligations, or vice versa.
The reality: These are two completely different beasts. UK VAT is a value-added tax collected at every stage of production. US Sales Tax is a consumption tax collected only at the final point of sale to the end-user. You can easily find yourself in a position where you owe both if you don’t structure your pricing and accounting correctly.
The fix: Maintain separate “buckets” for your UK and US accounting. Ensure your bookkeeping software is configured to handle US-style sales tax without messing up your UK tax tips and accounting. We recommend using a global compliance suite that handles both sides of the Atlantic simultaneously.
6. Neglecting Exemption Certificates
The mistake: Selling to a US wholesaler or another business and not charging sales tax because “it’s B2B.”
The reality: In the US, every sale is considered taxable unless you can prove otherwise. If you don’t collect sales tax from a buyer, you must have a valid, state-specific Exemption Certificate on file from them. During a state audit, if you can’t produce that certificate, the auditor will charge you the missing tax: even if the buyer was technically exempt.
The fix: Create a digital vault for all US exemption certificates. Before you ship a tax-free order to a US business, ensure you have their signed documentation. This simple habit can save you tens of thousands of dollars in an audit.
7. Blind Trust in “Marketplace Facilitator” Laws
The mistake: Thinking, “Amazon/eBay/Walmart collects the tax for me, so I don’t have to do anything.”
The reality: While Marketplace Facilitator laws have simplified things (where the marketplace collects and remits tax on your behalf), they don’t solve everything. You may still be required to register for a sales tax permit in states where you have nexus, even if the marketplace pays the tax. Furthermore, these laws often don’t cover your own Shopify store or direct website sales.
The fix: Verify your responsibility in writing with each platform. Even if they collect the tax, you might still have a “reporting-only” obligation. If you sell through multiple channels (e.g., Amazon + your own website), the complexity multiplies. Ensure your company formation and tax strategy account for this multi-channel reality.
How Sterlinx Global Solves the 2026 US Tax Puzzle
At Sterlinx Global Ltd, we don’t just offer “advice.” We provide a full-scale compliance engine. Our team handles the heavy lifting:
- Nexus Analysis: We scan your sales data and pinpoint exactly which states owe you tax obligations.
- Registration Management: We file your sales tax permits across all necessary states and manage renewals.
- Quarterly Compliance: We calculate, file, and remit your taxes on schedule, across all 11,000+ jurisdictions where you have nexus.
- Audit Defence: We keep digital records of exemption certificates and maintain bulletproof documentation to protect you in a state audit.
- Multi-Channel Support: Whether you sell on Amazon, eBay, Shopify, or your own website, we track it all and ensure nothing falls through the cracks.
The cost of compliance is always cheaper than the cost of non-compliance.
by Ariful | Mar 17, 2026 | Canada Updates
Expanding Your UK Limited Company into Canada: A Tax Guide
Expanding your UK Limited Company into the Canadian market is a bold and strategic move. With a stable economy, a similar legal framework, and a high demand for British expertise and products, Canada offers a wealth of opportunities. However, the complexity of the Canadian tax system can feel like a significant hurdle. Between federal requirements, provincial variations, and cross-border treaties, there is a lot to manage.
At Sterlinx Global Ltd, we specialize in helping businesses bridge the gap between the UK and international markets. We don’t just offer advice; we provide a complete tax compliance suite that handles your bookkeeping, calculations, and filings so you can focus on growth. This guide breaks down exactly what you need to know about navigating the Canada Revenue Agency (CRA) as a UK-based entity.
Determining Your Tax Footprint: The Permanent Establishment
The first step in your Canadian journey is determining if your UK Limited Company has a “Permanent Establishment” (PE) in Canada. This is the primary trigger for Canadian tax liability. Under the UK-Canada Double Taxation Convention, your company is generally only liable for Canadian corporate taxes if it operates through a PE.
A Permanent Establishment usually exists if you have:
- A fixed place of business, such as an office, branch, or warehouse.
- Employees or agents in Canada who have the authority to conclude contracts on behalf of your UK company.
- Substantial equipment or machinery used in Canada for a significant period.
If you are simply shipping goods from the UK to Canadian customers without a physical presence or local employees, your tax obligations might be limited to sales tax (GST/HST). However, once you cross the PE threshold, the CRA expects a share of the profits attributable to that establishment.
Choosing the Right Structure: Branch vs. Subsidiary
When you decide to have a physical presence in Canada, you must choose how to structure it. This decision impacts your reporting requirements and how profits are taxed.
Operating as a Branch
A branch is simply an extension of your UK Limited Company. It is not a separate legal entity.
- The Benefit: Start-up losses in Canada can often be offset against your UK profits, which can be a significant cash-flow advantage in the early years.
- The Compliance: You must file a T2 Corporate Income Tax return specifically for the branch’s Canadian income. You may also be subject to a “Branch Tax,” which acts as a proxy for the withholding tax that would apply to dividends paid by a subsidiary.
Incorporating a Canadian Subsidiary
A subsidiary is a separate Canadian corporation owned by your UK Limited Company.
- The Benefit: It provides a layer of liability protection for the UK parent company. It also simplifies local banking and contracting, as you are operating as a domestic Canadian entity.
- The Compliance: The subsidiary is taxed on its worldwide income at Canadian rates. When the subsidiary sends profits back to the UK parent as dividends, a withholding tax usually applies (though this is reduced by the tax treaty).
Choosing the right path depends on your long-term goals. If you’re unsure, talking to an expert can help you decide which structure aligns with your operational needs.
Navigating the T2 Corporate Income Tax Return
All non-resident corporations that carry on business in Canada must file a T2 Corporate Income Tax return. This is mandatory even if you claim that your income is exempt under a tax treaty.
Key Facts for T2 Filing:
- Currency: All amounts must be reported in Canadian Dollars (CAD). This is where many UK companies slip up, as fluctuating exchange rates can complicate your bookkeeping.
- Deadline: You must file your return within six months of the end of your fiscal year. However, if you owe tax, the payment deadline is usually earlier (two or three months after year-end).
- The Treaty Claim: To avoid double taxation, you must proactively claim treaty benefits on your T2 return. Failing to do so could result in the CRA assessing tax on your full Canadian revenue.
Managing these filings is a core part of our global tax compliance suite. We take your data and handle the heavy lifting of the T2 process, ensuring you meet the CRA’s strict standards without the stress.
Mastering GST/HST: The Canadian Sales Tax Landscape
Unlike the UK, where VAT is standard across the country, Canada uses a combination of federal and provincial sales taxes.
- GST (Goods and Services Tax): A 5% federal tax applied nationwide.
- HST (Harmonized Sales Tax): Several provinces (like Ontario and the Atlantic provinces) have combined their provincial tax with the GST. Rates vary from 13% to 15%.
- PST/QST: Some provinces (like British Columbia, Saskatchewan, and Quebec) maintain separate provincial sales taxes that must be filed independently of the GST.
When to Register?
The general rule is that if your worldwide taxable supplies exceed $30,000 CAD in a single calendar quarter or over four consecutive quarters, you must register for GST/HST. However, many UK companies choose to register voluntarily to claim Input Tax Credits (ITCs) on the tax they pay to Canadian suppliers, effectively recovering those costs.
Staying compliant means tracking your sales by province, as the rate you charge depends on the “place of supply.” This can be a logistical nightmare for fast-growing SMEs. This is why automated, daily compliance support is essential. For more on managing these nuances, check out our guide on cross-border currency and finances.
The UK-Canada Tax Treaty: Your Protection Against Double Taxation
One of the biggest fears for UK directors is paying tax twice on the same pound. Thankfully, the UK and Canada have a robust Double Taxation Convention.
This treaty ensures that:
- You aren’t taxed on business profits in Canada unless you have a Permanent Establishment.
- Withholding taxes on dividends, interest, and royalties are capped at reduced rates (often 5% or 10% instead of the standard 25%).
- You receive a foreign tax credit in the UK for taxes paid in Canada, preventing the “double dip” by tax authorities.
To benefit from these protections, you must provide the correct documentation, such as a Certificate of Residence from HMRC, and ensure your filings are perfectly aligned with the treaty articles.
Payroll and Regulation 102
If your UK Limited Company sends employees to Canada, even temporarily, you may run into “Regulation 102.” This requires non-resident employers to withhold Canadian payroll taxes from the remuneration paid to employees for services rendered in Canada.
Even if the employee will ultimately be exempt from Canadian tax due to the 183-day treaty rule, you still have a withholding obligation unless you apply for a formal waiver from the CRA in advance. This is a common trap for UK businesses that think a short trip doesn’t count as “working in Canada.”
How Sterlinx Global Simplifies Your Canadian Expansion
Expanding internationally shouldn’t mean spending your weekends on the CRA website. Sterlinx Global Ltd operates as your end-to-end compliance partner, handling everything from Permanent Establishment analysis and corporate structure planning to T2 filings, GST/HST registration, and payroll compliance. We bridge the gap between UK accounting standards and Canadian requirements, so your expansion stays on track and fully compliant.
by Ariful | Mar 17, 2026 | US Updates
The Big Myth: Filing vs. Paying
Before we dive into the dates, let’s clear up the biggest misconception in US taxation. An extension to file is not an extension to pay.
Even if you successfully request an extension to move your filing date to October, the IRS expects every penny of tax owed to be paid by April 15, 2026. If you miss that payment date, the interest starts accruing immediately. Don’t let a paperwork delay turn into a debt trap.
March 16, 2026: The First Major Hurdle
For many business structures, the first “finish line” isn’t in April: it’s in March. Because March 15 falls on a Sunday in 2026, the deadline moves to the next business day.
Who needs to act now?
- S-Corporations (Form 1120-S): If you’ve elected S-Corp status, your return is due now.
- Partnerships (Form 1065): This includes multi-member LLCs that haven’t elected to be treated as corporations.
The Strategy: If you aren’t ready to file, you must submit Form 7004 by this date to request a six-month extension. Doing this pushes your filing deadline to September 15, 2026. However, remember the rule above: pay any estimated taxes now to avoid the IRS “late payment” sting.
April 15, 2026: The Critical Deadline for Everyone
This is the day the US tax world revolves around. It is the final deadline for several key groups and the mandatory payment date for almost everyone else.
1. C-Corporations (Form 1120)
If your international business operates as a US C-Corp, your federal income tax return is due today. C-Corps are popular for international sellers looking to reinvest profits or eventually seek VC funding, but they come with strict annual filing requirements.
2. Sole Proprietorships and Single-Member LLCs
If you are an individual seller or a “disregarded entity” (a single-member LLC that hasn’t chosen to be taxed as a corp), your personal tax return (Form 1040 or 1040-NR) is due today.
3. Estimated Tax Payments (Q1 2026)
Success breeds tax obligations. If you expect to owe more than $1,000 in taxes for the 2026 tax year, your first quarterly estimated payment is due today. Keeping up with these keeps your cash flow predictable and avoids year-end “tax shock.”
4. Extension Requests (Form 4868)
If you are an individual (including sole proprietors) and need more time, you must file Form 4868 by today. This grants you an extension to file until October 15, 2026.
The “Invisible” Deadline: Form 5472 for International Owners
This is where many international sellers get caught out. If you own a US LLC that is “foreign-owned” (at least 25% owned by a non-US person) and it is a disregarded entity, you have a specific reporting requirement.
You must file Form 5472 along with a pro-forma Form 1120. The IRS uses this to track transactions between the US company and its foreign owner.
- The Penalty for Missing This: In recent years, the penalty for failing to file Form 5472 or filing it incorrectly has started at $25,000.
Don’t guess on this one. If you are an international seller with a US entity, talk to an expert to ensure your Form 5472 is handled correctly.
June 15, 2026: The Expat Advantage
If you are a US citizen or resident alien living and working outside the United States on the April 15 deadline, you get a “free” two-month extension to file your return. You don’t even need to file a form to get this; it is automatic.
The Catch: Again, the IRS is hungry for its money. Interest on any unpaid tax still starts accruing from April 15. If you owe money, the June extension only helps you avoid the “failure to file” penalty, not the “failure to pay” interest.
October 15, 2026: The Final Countdown
If you filed for an extension back in April, today is the day. There are no further extensions for 2025 tax year returns.
FBAR (Foreign Bank Account Report)
This is arguably the most important date for international sellers with global footprints. If you had a financial interest in or signature authority over foreign financial accounts (including bank accounts, brokerage accounts, etc.) that exceeded $10,000 at any time during the 2025 calendar year, you must file FinCEN Form 114.
While the official deadline is April 15, the IRS grants an automatic 6-month extension to October 15 for everyone. You do not need to request this extension; it’s yours by default.
Checklist for International Sellers in 2026
To ensure you stay compliant and keep your business running smoothly, follow this operational checklist:
- Reconcile your books monthly: Don’t wait until March to look at your 2025 data. Accurate cash flow management and bookkeeping throughout the year make tax season a breeze.
- Confirm your entity type: Are you a disregarded LLC, a C-Corp, or a Partnership? Your deadline depends entirely on this classification.
- Track “Reportable Transactions”: For Form 5472 purposes, keep a log of every time you move money between your personal foreign account and your US business account.
- Check your Sales Tax Nexus: Income tax is only half the battle. Ensure you are also tracking where you have “nexus” for US Sales Tax. Physical or economic presence triggers filing requirements.
- Gather Foreign Bank Data: Start collecting the highest balance of every non-US account held in 2025 for your FBAR filing.
How Sterlinx Global Simplifies US Tax Compliance
Navigating the IRS from outside the US is a daunting task. The rules for international owners are significantly more complex than those for domestic businesses. At Sterlinx Global, we operate as your end-to-end compliance partner.
We don’t just give advice; we deliver results. Our team handles:
- Bookkeeping & Year-End Accounts: Ensuring your data is IRS-ready.
- Tax Calculations: Determining exactly what you owe so there are no surprises on April 15.
- Federal & State Filings: Managing the submission of Form 1120, 1065, 5472, and more.
- Sales Tax Management: Keeping you compliant across the various US states where you sell.
