Fiction and education, not advice. See our Disclaimer.
This is fiction. Sam Ortiz is a made-up name. The invoices, the van, and the balances are hypothetical 2026 U.S. figures. Not a real person’s books. Not a recommendation.
Sam is 39, a plumber who also bids small remodel work as a one-van contractor. The work is real. The deposits are a rumor until they clear. August looked busy on the whiteboard and late in the checking account: a kitchen that finished in June paid on day 47, a water-heater swap that paid on the spot, and a bathroom that is still “the check is in the office.”
The van needed brakes. The tools needed a saw that was definitely a business expense and also, somehow, a personality. Estimated taxes do not care which invoice is late.
August 2026 cash flow (fictional)
| Category | In | Out |
|---|---|---|
| Collected invoices (3 jobs) | $7,640 | |
| June kitchen, paid 47 days late | $2,280 | |
| Van payment | $468 | |
| Fuel + tolls | $341 | |
| Tools / parts not billed through | $512 | |
| Liability + van insurance | $287 | |
| Phone + invoicing app | $78 | |
| Rent (half a duplex) | $1,425 | |
| Groceries | $445 | |
| Health insurance (marketplace) | $398 | |
| Estimated tax transfer | $1,600 | |
| Truck-stop lunches | $94 | |
| Net to checking | +$4,272 | |
Still sitting in someone else’s accounts payable: about $3,650. We are not putting that in the cash column. Cash is what the bank will honor. A signed invoice is a story you tell the van when it wants brakes.
Net worth, August 31, 2026 (fictional)
| Item | Amount |
|---|---|
| Checking (business and personal, one messy account) | $5,840 |
| “The van breaks” savings | $4,200 |
| Van (rough private-party) | $16,800 |
| Van loan | −$9,640 |
| Tools (used-market, not replacement cost) | $7,400 |
| Credit card (parts float) | −$980 |
| SEP-IRA (opened, barely funded) | $2,150 |
| Open invoices | $0 on this sheet (see note) |
| Net worth | $25,770 |
Note: the $3,650 outstanding is work already done. It is not an asset we will pretend is spendable. If it arrives in September, that month gets a deposit. If it does not, Sam has a collection problem, not a rounding error.
Cash is not the same as a busy month
The educational idea is ugly and useful: accrual (work earned) and cash (money in the bank) can disagree for weeks. A contractor who budgets the whiteboard will overspend the checking account. Estimated taxes make the gap louder, because the IRS does not accept “they haven’t paid me” as a filing status.
We are not telling tradespeople to switch software, raise rates, or open a SEP-IRA. We are showing why a late invoice and a van payment can share a calendar. Follow Sam in his category.
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