Bank Account Structure: Operating, Payroll, Tax, Reserve

The basic four-account structure

1) Operating: receives all customer revenue and pays day-to-day expenses. 2) Payroll: holds 2-4 weeks of upcoming payroll, transferred from operating on a schedule. 3) Tax: holds estimated quarterly taxes and sales tax, transferred as soon as taxable revenue is recognized. 4) Reserve: long-term operating buffer, transferred on a schedule (e.g., 5-10% of revenue each month).

More elaborate variants add separate accounts for owner profit, capital expenditures, and specific savings goals. The point is the same: money allocated to a purpose stops feeling spendable.

Why it works behaviorally

A single \$120K balance feels abundant; the same money split as \$40K operating + \$30K payroll + \$25K tax + \$25K reserve feels like exactly what it is — fully committed. Owner-operators making spending decisions look at the operating balance only and instinctively spend within it.

Mike Michalowicz popularized this in 'Profit First' as a behavioral fix for the chronic problem of profitable businesses with no cash. The mechanics are old (treasury teams have done segregation for decades); the contribution is making it accessible to owner-operators with simple business checking accounts.

A simple structure that scales

The classic four-account structure works for most service businesses: an operating checking account for day-to-day inflows and outflows; a payroll checking account funded by transfer two business days before each payday; a tax-holding savings account funded with a fixed percentage of every revenue deposit; and a reserves money market account holding the operating cash reserve. Funds flow into operating, then are distributed by rule to the other three.

The Profit First framework popularized by Mike Michalowicz adds a fifth — owner's compensation — and a sixth — profit — and uses fixed percentages from each deposit (e.g., 10% to tax, 5% to profit, 50% to operating). The mechanism matters more than the exact percentages: by routing money out of the operating account immediately, you can no longer accidentally spend money that's been earmarked for taxes, payroll, or profit distribution.

Resist the temptation to over-engineer. Each additional account is more reconciliation work and more ways for funds to be in the wrong place when they're needed. Four to six accounts is usually the right balance; ten is almost always too many for a business under $10M in revenue.

Reconcile every account monthly without exception. The discipline is what catches both honest errors and outright fraud; in most published small-business fraud cases, the warning signs were visible in unreconciled bank statements for months before the loss became material. Bank reconciliation is the single most important monthly accounting control, and it doesn't matter how many accounts you have if you reconcile them all.