Calculators
Free calculators for buyers of small online businesses
Five calculators for the arithmetic that listing pages leave to you. Each one runs in your browser, sends nothing you type, and keeps your inputs in the page address so you can bookmark or share a result.
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True payback calculator
Headline payback and multiple, then the same figures after the owner's time, costs missing from the P&L and one-time deal costs.
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SaaS churn stress test
MRR over the next 12 months at the stated churn rate, and payback if new sales continue or stop after you take over.
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Traffic-drop test
Profit and payback after a fall in organic search revenue, and the size of drop that takes profit to zero.
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Amazon FBA price check
The multiple as listed, the multiple once inventory is counted, and how many months of sales the stock covers.
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Seller financing calculator
The monthly note payment, the cash left from profit each month and how long it takes to earn back your down payment.
Have a listing open? The red-flag checker reads the listing text, works out payback and lists the top flags with a question for the seller on each. For a full memo on a live listing priced $10k–150k, apply for the free beta.
The calculators do arithmetic on the figures you enter. They are not investment, legal, tax or valuation advice, and they do not check whether a seller's figures are true.