One of the most common things we hear from new clients is: "I had no idea I could deduct that." After reviewing hundreds of eCommerce seller tax returns, we've identified 15 deductions that are routinely missed — together costing the average seller $8,000–$20,000 in unnecessary tax every year.
This guide covers every major deduction available to Amazon, Shopify, eBay, and Etsy sellers — and how to claim them correctly.
📝 Important Disclaimer
Tax laws vary by jurisdiction. This guide covers general principles applicable to most US, UK, and Pakistan-based sellers. Always consult with a qualified accountant for advice specific to your situation. TSA & COO offers free consultations where we review your specific deduction opportunities.
The Golden Rule: Business vs Personal
Before diving into the deductions list, understand the fundamental rule: an expense is deductible if it is wholly and exclusively for business purposes. Mixed-use expenses (partly business, partly personal) can sometimes be partially deducted based on the business-use percentage. Keep receipts for everything — HMRC and the IRS can audit up to 7 years back.
The 15 Deductions Most eCommerce Sellers Miss
1. Home Office Deduction
If you run your eCommerce business from home, you can deduct a portion of your home expenses proportional to the space used. This includes rent or mortgage interest, utilities, internet, and home insurance. The calculation: measure your office space as a percentage of total home square footage and apply that percentage to eligible costs.
✓ UK sellers: Use HMRC's simplified method (£6/week fixed rate) or calculate actual costs. US sellers: Use the simplified method ($5/sq ft up to 300 sq ft) or regular method.
2. Amazon/Platform Fees
Every fee Amazon, Shopify, eBay, or Etsy charges you is fully deductible: referral fees, FBA fees, monthly subscription fees, listing fees, return processing fees, long-term storage fees. Most sellers claim these — but they frequently miss that these should be deducted from gross revenue, not added to expenses separately, for the most accurate P&L.
3. Advertising and PPC Spend
Sponsored Products, Sponsored Brands, Sponsored Display, Google Ads, Facebook/Meta Ads, TikTok Ads, influencer fees — all 100% deductible as marketing expenses. Ensure you're capturing these from every platform you advertise on, not just Amazon.
4. Software Subscriptions
This is where sellers consistently leave money on the table. Fully deductible software includes:
- Inventory management tools (Inventory Lab, Sellerboard, Helium 10)
- Accounting software (QuickBooks, Xero)
- A2X, Link My Books (reconciliation tools)
- Jungle Scout, Viral Launch (product research)
- FeedbackWhiz, Seller Labs (review/communication tools)
- Shopify, WooCommerce (platform subscriptions and apps)
- Canva, Adobe Creative Cloud (design for listings)
- Slack, Zoom, Asana, Monday.com (team tools)
5. Shipping and Packaging Costs
If you ship any goods directly (FBM on Amazon, Shopify fulfilment, eBay), all postage, courier fees, and packaging materials are deductible. This includes: boxes, bubble wrap, tape, poly mailers, thermal label printers, and shipping scales.
6. Professional Services
Accountancy fees, bookkeeping fees, legal fees (for business matters), trademark registration — all deductible. This means the cost of TSA & COO's services is itself a tax-deductible expense that partially offsets our fee.
7. Photography and Content Creation
Product photography for listings, video production for brand content, graphic design for infographics — all 100% deductible as marketing/advertising costs.
8. Education and Training
Courses, conferences, books, and coaching related to your eCommerce business are deductible. Amazon seller courses, Shopify training, bookkeeping courses, business development conferences — keep receipts for all of these.
9. Travel and Mileage
Travel to trade shows, supplier visits, courier drop-offs, and business meetings is deductible. For driving: UK sellers claim 45p/mile for the first 10,000 miles, then 25p/mile. US sellers use the IRS standard mileage rate (67 cents/mile in 2024) or actual vehicle costs. Keep a mileage log.
10. Returns, Damages, and Write-offs
Inventory that is returned damaged, lost in transit, or written off as unsellable is a deductible loss. Many sellers forget to formally write off unsellable inventory at year-end, leaving a deductible loss sitting on their balance sheet indefinitely.
Are You Claiming All Your Deductions?
Book a free consultation with our team. We'll review your current setup and identify every deduction you're entitled to — no obligation, no pressure.
Book Free Deduction Review →11. Bank Charges and Payment Processing Fees
Monthly bank fees, Stripe/PayPal processing fees, international transfer fees, currency conversion costs — all fully deductible. If you're using Wise or Payoneer to receive international payments, those fees are deductible too.
12. Employee and Contractor Costs
VA (virtual assistant) fees, customer service contractors, prep centre costs, freight forwarder fees — if you pay anyone to help run your business, those payments are deductible. For employees, add employer NICs (UK) or payroll taxes (US) to the deductible amount.
13. Inventory Financing Interest
If you use a credit card, business loan, or inventory financing facility (like Clearco or Payability) to fund your stock, the interest charges are deductible as a finance cost. The principal repayment is not deductible — only the interest.
14. Depreciation of Equipment
Laptops, printers, label printers, cameras, warehouse equipment, shelving — these are capital assets that depreciate over time. In the UK, most qualify for the Annual Investment Allowance (100% in year 1). In the US, Section 179 allows 100% first-year deduction on qualifying equipment up to $1.16M.
15. Pension Contributions
If you're self-employed or a company director, pension contributions are one of the most tax-efficient deductions available. UK limited company directors can contribute up to £60,000/year to a pension and deduct it from company profits, saving up to 25% corporation tax on those contributions. This is consistently the most underutilised deduction we see.
How to Maximise Your Deductions: Practical Tips
- Use a dedicated business bank account and card — Makes tracking automatic
- Use accounting software that auto-categorises — QuickBooks and Xero learn your patterns
- Photograph and digitise every receipt — Use Hubdoc or Dext for receipt capture
- Review your P&L monthly — Catch missing expenses before year-end
- Work with an eCommerce specialist — General accountants miss platform-specific deductions