Every recovery tool can tell you how much money it made its customers. Almost none can show you the ledger those numbers came from, which means you are asked to buy a result you cannot reproduce with a pencil. That is backwards. You already own the only trustworthy starting point in the whole calculation: your own payment records from last quarter. Before any sales call, before any dashboard tour, sit down with those records and build the number yourself, slowly.
Step one: count, do not estimate
Start with a count, not a percentage. Pull every failed renewal from the last full quarter — not signups that never converted, not voluntary cancellations, just existing subscribers whose payment failed when it was due. Write the raw count at the top of the page. Then multiply by your average subscription price to get the gross value at risk. This figure will feel large. It should. It is also not your recoverable number, and treating it as one is the first mistake most ROI spreadsheets make.
Step two: split the pile in two
Next, split that pile in two, because declines are not all the same animal. Hard declines — stolen cards, closed accounts, do-not-retry instructions from the bank — are not coming back through polite emails, and honest arithmetic leaves them out. Soft declines are the recoverable pile: insufficient funds on the wrong day, an expired card, a temporary bank hold, a spending limit brushed at midnight. Your processor's decline codes will sort most of this for you. Only the soft pile goes into the next step, and anyone who applies a recovery rate to the whole pile is inflating the answer.
Step three: use a range you would defend in a bad month
Now be deliberately ungenerous to yourself. Apply a low, conservative recovery range to the soft pile only — the kind of range you would still believe after a bad month, not the best case a vendor puts in a slide deck. If the conservative end still produces a useful number, the optimistic cases can take care of themselves. If only the optimistic end works, you have not found an investment. You have found a hope with a checkout page attached to it, priced monthly.
A worked example, with invented numbers
Here is a worked example. Every number below is invented for illustration — this is not a real business, and these are not results anyone obtained. Say a subscription service had 400 failed renewals last quarter at an average of $30 a month.
- Failed renewals in the quarter: 400, worth $12,000 at $30 each
- Hard declines, excluded: 120, worth $3,600
- Soft declines, the recoverable pile: 280, worth $8,400
- Recovered at a conservative 20 percent of the soft pile: 56 subscribers, worth $1,680
- Recovered at 30 percent: 84 subscribers, worth $2,520
Step four: subtract everything, including the tool
Gross recovered revenue is still not ROI, so subtract everything the recovery itself costs. Retry and network fees, any per-recovery charges, the email tool you may already pay for, and finally the price of the recovery tool itself across the same quarter. In the invented example, a flat $179 a month is $537 a quarter — easy to subtract, because it does not move when the recovered number moves. Against $1,680 at the conservative end, that leaves $1,143 before other fees. Against a percentage fee, the subtraction changes every time the recovery does, which is precisely why vendors prefer you not to do it.
Step five: compare vendors on inputs, not slogans
Only now, with your own range on paper, should you compare vendors — and compare them on inputs, not slogans. Ask each one which dollars it counts as recovered, how long a saved subscriber must stay to count, and whether a payment that would have succeeded on a simple retry gets claimed as a win. That discipline is the heart of working out payment recovery ROI: your ledger sets the ceiling, the vendor explains how much of that ceiling it can reach, and the price is judged against the conservative end, never the flattering one.
Keep the worksheet. Rebuild it every quarter from the new ledger, because your mix of declines shifts as your customer base and your pricing change. And hold every vendor to the standard the worksheet sets. If a vendor will not show you which dollars it counted, its ROI is marketing, not arithmetic — and marketing, however polished, has never once paid a processor invoice on anyone's behalf or explained itself to a finance lead reviewing the quarter in a quiet room on a Tuesday afternoon in November.
Notes from the team at Swipe Again on doing the sums before the sales call.
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