What migration does to the P&L and the cash cycle
Finance owns the model. Three things move, and they move on different clocks: recurring margin, one-time working capital, and the fees that fund the program.
Store fees a year — 22% of everything billed.
Held in a 48-day settlement queue — about 10% of ARR.
Points of margin per migrated renewal, permanently.
Rates, not just absolutes, so the figures scale: fees track billings at the blended rate; held float tracks ARR at roughly a tenth. Web billing costs 3.6% + $0.30 to collect.
Three different clocks
The fee mechanics
Cash-flow release is not margin recovery. The drained queue can fund working capital through the migration, but reclaimed monthly margin alone does not cover the migration fee in the first months — the fee is front-loaded against a margin line that builds. Model them separately.
Neither figure is net of running billing. Dunning, tax, receipts, refunds and chargeback cover move with the billing and cost something wherever they sit.
What to model
Current store fee exposure, at your blended rate
Eligible base, not total base
Migration cases at 40%, 55% and 70%
Processing and tax on the chosen rail
Pilot and migration fee timing
Platform fee after the first-year window
The load-bearing input is the migration rate. It is the one number no model settles — a two-week pilot measures it on your own book against a matched holdout before anything scales.
Sixty seconds and two inputs. Store fee exposure, held float and recovery by migration rate, on your ARR and fee mix — in a form you can put in front of the board.
This is a one-page reading of the full method, written for your seat. The whole argument — the fee decomposition, the cash-flow release, the cohort framework, the guardrails and the commercial model — is published in the store-to-web subscriber migration playbook. Twenty-nine minutes, no gate.
2026 edition · Every figure computes from the same model the audit runs on your numbers. The worked example is a representative book: $5M store-billed ARR, 22% blended store fee, 50/50 plan mix at $10/mo and $100/yr. Web figures carry the payment rails only and do not net Stripe Tax.
