Etsy eBay Vinted Seller Tax Spreadsheet UK 2025/26, Self Assessment Template, Online Seller Income Expense Tracker, Tax Estimate Calculator

Self-Assessment Workbook for Online Sellers — 2025/26 tax year (return due 31 January 2027).

Selling on Etsy, eBay, Vinted, Depop or Amazon? Since January 2024 the platforms report sellers' earnings to HMRC once you pass 30 sales or about £1,700 a year — so HMRC may already know what you made. This workbook turns your sales and costs into the figures you need, and shows your estimated bill before the deadline.

WHAT'S INSIDE
• Start Here — a plain-English guide, 5 minutes to set up
• Income log — sales by platform
• Expenses log — stock, postage, packaging, platform fees, ads, sorted into HMRC's Self Assessment boxes
• Mileage log — 45p/mile for the first 10,000 miles, 25p after, calculated for you
• Summary — profit, Income Tax, Class 4 NI and your estimated bill, plus payments on account and a monthly savings target
• £1,000 trading allowance check — tells you which option cuts your bill
• MTD Check — will Making Tax Digital apply to you from April 2027?
• Deadlines — every key HMRC date

2025/26 RATES BUILT IN
Personal allowance £12,570 • basic rate 20% • higher rate 40% • Class 4 NI 6%/2%.

HOW IT WORKS
1. Download the .xlsx file after purchase
2. Open in Excel, Google Sheets or Apple Numbers
3. Fill in the yellow cells — everything else calculates

PLEASE NOTE
• Digital download — nothing is posted
• An estimating and record-keeping tool, not tax advice. England, Wales & NI rates. Check anything complex with an accountant or HMRC.
• Selling your own unwanted personal items is usually not trading — this is for people buying to resell or making things to sell.
• Designed with AI assistance, checked and tested by hand.

Questions? Message the shop — I reply quickly.