How to Track Job Receipts: What Each One Must Show, and Where It Goes

A receipt is one piece of evidence. Job cost is what it becomes once it is assigned to the right job and the right line.

Clamp saves a receipt with only a total. That is the app's minimum, not a good record.

The same day, by the person who bought it. On a crew, the buyer captures and codes the receipt before the end of the day; the office reviews the exceptions. IRS Publication 583 says to record transactions as they occur, and that daily is generally best. Michael C. Stone, a builder and remodeler with more than six decades in the industry and the author of Estimating Construction Profitably, is blunter about why (chapter 12): an estimated-vs-actual comparison breaks down when whoever enters the cost doesn't know which part of the job a purchase was for.

A filled example from the published 5x8 bathroom:

Costed against the estimate line

The return, its own entry

The floor tile receipt in Clamp, costed against the estimate's tile allowance line, and the job's receipts with the return as its own entry. Demo data on the published 5x8 bathroom.

Job or overhead? Tile set on the bathroom is job cost. Printer toner for the office is overhead. Which account a cost uses is covered in What is job cost and the overhead categories.

One purchase for several jobs. Clamp can't split one receipt across jobs. Ask for a separate ticket for each job at the register. When one receipt covers several jobs, log it to Multi-Job. Because a Multi-Job receipt is not assigned to an individual job, it can't make any one job's estimated-vs-actual complete. If accurate per-job costing matters, ask for separate tickets.

Paid personally. Log it the same day as "Paid personally", not after you pay yourself back. Waiting leaves the job's cost short in the meantime.

From the published 5x8 bathroom (Clamp Research). The purchase and the return are an illustration; the estimate line is published.

The estimate carries 30.8 sf of floor tile at $5.50 = $169.40: the 28 square feet of floor plus waste.

You buy 44 sf, four boxes, at $5.25 = $231.00. Clamp compares this receipt with the line: it divides the $231.00 by the line's 30.8 sf and shows $7.50/sf against $5.50/sf estimated, $62 over.

One unopened box, 11 sf, goes back for $57.75. The return is its own entry, linked to the original.

Net job cost for the line is $173.25, $3.85 over the $169.40 estimate. You paid less per square foot than estimated, but bought whole boxes.

Two questions, two answers. The variance tells you whether this line cost more or less than you estimated, which is a lesson for your next estimate. What the customer owes for a selection that ran over the allowance is a different question, answered by the signed agreement and a change order (How to Write and Price a Change Order). A receipt is evidence of cost. It is not, by itself, a bill to the customer.

For the IRS. The IRS doesn't prescribe a receipt format. Keep enough supporting records to identify the payee, amount, proof of payment, date incurred, and the item purchased or service received, showing that the amount was for a business purchase or expense (IRS, "What kind of records should I keep?"). One receipt may show most of that; another record, such as a card statement or canceled check, may be needed to prove payment. Proof of payment alone does not establish the expense (Pub. 583). Keep records for the applicable IRS limitations period, commonly three years for ordinary return-supporting records, and longer when special rules apply. Confirm your retention policy with your tax professional.

The paper. A receipt photo can be part of a compliant electronic recordkeeping system, but taking a picture does not by itself establish that the system meets the IRS electronic-storage requirements (Rev. Proc. 97-22). This guide keeps the paper until your tax professional approves a photo-only process.

For a customer dispute. The receipt is evidence of what you bought. Under this guide's contract process, the chain that settles an allowance question is the signed allowance baseline, the purchase evidence, any return or credit, the resulting difference, and the signed change order that adjusts the customer's price.

For a job-cost review. A receipt holds up when it carries the job, the category, the estimate line, the amount, the date and the description. Then you can say: we estimated this, we spent this, here is the evidence. Stone (chapter 12) says the only way to improve estimate accuracy is to know how the finished job's actual cost compared with the estimate. The method is in How to Job Cost a Remodeling Job.

Decide these before the first receipt.

What people get wrong with receipts, and what to do instead.