Business Calculators UK
Free business calculators for UK sellers and small firms: postage, selling fees, markup and margin and borrowing costs.
- Calculators8
- Rules and figuresUK, November 2026
- CostFree, no sign-up
Business & selling online calculators
Business loanRepayments and total cost of a secured or unsecured business loan.Postage calculatorRoyal Mail price by size, weight and service, stamps vs online.3D printing costCost and selling price of a 3D print, including power and wear.Amazon FBA profitProfit and margin per unit after Amazon UK FBA fees and VAT.Depreciation calculatorStraight-line and reducing balance depreciation, year by year.Auction feesBuyer's premium, VAT and seller's commission at UK auctions.Markup calculatorSelling price from cost and markup, with margin and VAT.Book printing costCost per copy for print on demand vs a short print run.
What each calculator does
| Calculator | What it works out |
|---|---|
| Business loan | Repayments and total cost of a secured or unsecured business loan. |
| Postage calculator | Royal Mail price by size, weight and service, stamps vs online. |
| 3D printing cost | Cost and selling price of a 3D print, including power and wear. |
| Amazon FBA profit | Profit and margin per unit after Amazon UK FBA fees and VAT. |
| Depreciation calculator | Straight-line and reducing balance depreciation, year by year. |
| Auction fees | Buyer's premium, VAT and seller's commission at UK auctions. |
| Markup calculator | Selling price from cost and markup, with margin and VAT. |
| Book printing cost | Cost per copy for print on demand vs a short print run. |
Using these calculators
Carrier and marketplace prices change often. Check the latest tariff before you price your products.