FBA VS FBM CALCULATOR
FBA VS FBM Calculator
Compare both routes with your own time costed rather than free, and see what self-fulfilment is really paying you an hour, with a free calculator and Excel workbook.
FBA vs FBM Calculator
Same product, both routes, with your own time costed rather than treated as free. Self-fulfilment usually looks cheaper per unit and usually is not, once you work out what the hours are paying you.
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Fill in a selling price to see the answer.
Contribution per unit, FBA –
Contribution per unit, FBM –
FBM before costing your time –
What self-fulfilment saves you a month–
Hours a month it costs you –
So self-fulfilment pays you –
Monthly contribution, FBA –
Monthly contribution, FBM –
The Prime badge is not in these numbers. FBA usually converts better, so if it already wins on cost the badge is a bonus, and if it loses on cost this tool tells you how much better it would have to convert to be worth it.
Take this calculator into Excel
The workbook adds a grid of your hourly rate against minutes per order, so you can see the exact point where the answer flips rather than testing one combination at a time. Most sellers find the flip is closer than they expected.
Download the Excel workbook Want a second opinion on the whole cost base? Get in touchFAQs
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We provide bookkeeping, VAT returns, payroll, tax filings, annual accounts, and advisory services — tailored to freelancers, SMEs, and ecommerce businesses.
Yes. Every client works with a named accountant who knows your business inside out. You’ll never deal with call centres — just direct, personal support.
We’re certified partners with Xero and QuickBooks. Our digital-first approach means you’ll always have real-time access to your financial data.
We offer fixed monthly packages with no hidden fees. Pricing depends on your business size and the level of support you need — but you’ll always know exactly what you’re paying for.
Absolutely. We handle VAT, corporation tax, self-assessments, and payroll tax. We also manage HMRC correspondence on your behalf to ensure you never miss a deadline.
No. While many of our clients are London-based, we also support businesses across the UK and ecommerce sellers worldwide through our cloud-based systems.
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