Free accounting resources for UK online sellers

Every free calculator, workbook, checklist and guide we have built that does not care where you sell. All of it free, none of it behind an email form, all of it on 2026/27 rates. If you sell on one platform, the four links below go straight to the tools built for it.

Sell on one platform

Each of these has its own library, with the fee maths and the reporting quirks that only apply there.

AmazonFBA fees, ACoS, settlement reconciliation and the reimbursement claims most sellers never make.eBayFinal value fees, the VAT margin scheme for used stock, and whether you are trading at all.EtsyListing and transaction fees, Offsite Ads, costing handmade work and paying yourself for the making.Shopify and your own siteProcessing fees, subscriptions, and the cost of finding every customer yourself.

Format

44 resources, all free, no signup

Calculators

Work the number out on the page, then take the Excel version away.

Workbooks and trackers

Excel files that keep working after you close the tab.

Start hereMulti-Channel Bookkeeping TemplateAmazon, eBay, Etsy and your own site consolidated into one profit and loss, with the rolling VAT test run on taxable turnover rather than on the money that reached your bank.Marketplaces pay you net, so payouts understate turnoverProfit still comes out right, which is why nobody noticesThe worked year crosses the threshold, the payouts do notFree Excel workbook, six sheets 13-Week Cash Flow ForecastBuilt on the settlement cycle, because half your weeks have no income in them at all.Excel workbook Bookkeeping TemplateA single-channel profit and loss for a seller who is not yet on four platforms, on a month by month layout.Free Excel workbook Director's Loan Account TrackerThe section 455 charge at both 2026 rates, the benefit in kind, and the nine-month clock.Excel workbook Inventory Count WorkbookCounts and values stock at the lower of cost and net realisable value, then bridges it into cost of sales.Excel workbook Mileage and Home Office LogBusiness mileage at the 55p rate and the home office claim three ways.Excel workbook Payout Reconciliation WorkbookTies a platform payout to the orders inside it, so the difference is explained rather than posted to a suspense account.Free Excel workbook Refunds and Returns TrackerWhat returns cost once the postage back, the refunded fees and the unsellable stock are counted.Free Excel workbook SKU Margin TrackerEvery product line ranked on what it actually keeps, which is rarely the order you would guess.Free Excel workbook Tax CalendarEnter your year end and get every filing and payment date, with days to go and the penalty for missing each.Excel workbook

Checklists

Printable, timed, and ordered so nothing depends on something later.

Start hereVAT Registration ReadinessThe checks and decisions before you register, including the pre-registration VAT most people miss.What to have ready before you register, in orderThe rolling twelve month test, not the tax yearWritten for sellers who crossed without noticingPrintable checklist Am I Ready to Go Limited?The signals that make incorporating worth it, and the reasons that no longer count.Printable checklist HMRC Records ChecklistWhat to keep, in what form, and for how long. An audit of what you already have.Printable, 20 minutes Monthly Close ChecklistNinety minutes a month, in the only order that works: settlements reconciled before margins are judged.Printable, 90 minutes New Seller Setup ChecklistThirty-five things that take minutes now and hours to sort out retrospectively.Printable, 2 hours Year-End ChecklistStock count, cut-off and the liabilities people forget. Roughly a third of it has to happen before your year end rather than after it, which is why most year-end advice arrives too late to help.Printable, 3 hours

Guides and e-books

The longer reads, with worked examples on current rates.

Start hereFrom First Sale to First VAT ReturnOne shop followed through eighteen months and every tax event on the way.The whole path, from first order to first return filedWorked on 2026/27 rates and the £90,000 thresholdWhat changes about your pricing the day you registerE-book Pricing for ProfitLanded cost, margin, contribution and break-even ROAS, and what VAT registration does to a price list.E-book Sole Trader or Limited?The comparison on 2026/27 rates at three profit levels, including where a sole trader still keeps more.E-book The Pan-EU VAT GuideOne box in Seller Central can create five foreign VAT registrations. What it does, what it costs, and the volume at which it starts to be worth it.E-book, eleven chapters The UK Tax HandbookSixteen chapters on UK tax for online sellers, from whether you are trading at all to the mistakes that cost most.E-book

Look it up

For when you need one word or one answer rather than a tool.

Start hereE-commerce Accounting GlossaryThe 144 general terms: landed cost, contribution, VAT thresholds, payouts, stock and year end.Every term the platforms and HMRC use differentlyWritten for sellers rather than for accountantsThe neutral one; each platform has its own as well144 terms Amazon Seller GlossaryThe words that mean something different on Amazon, or nothing anywhere else. Settlements, reserves, ACoS, size tiers and Pan-EU, each with the free tool that deals with it.56 terms, searchable Etsy Seller and Maker GlossaryThe words that mean something different on Etsy, or that only a maker needs. Offsite Ads, deemed supplier, work in progress, scrap and the two hourly rates, each with the free tool that deals with it.52 terms, searchable eBay Seller GlossaryThe words that mean something different on eBay, or mean nothing anywhere else. Final value fees, managed payments, INR, SNAD, attributed sales and the margin scheme, each with the free tool that deals with it.26 terms, searchable

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