How to Close the Books at the End of the Week

Why this matters

Books that get touched once a quarter are books full of guesses. The receipt is lost, nobody remembers what the cash payment was for, and two completed jobs were never invoiced at all. A short weekly close keeps the records honest while the week is still fresh in everyone's memory. It is not the same as checking cash flow, which looks forward at whether you can make payroll (see related: How to Do a Weekly Cash-Flow Check in Under an Hour). The weekly close looks backward and asks a different question: is every dollar of work, payment, and expense from this week actually recorded and correct. Do it every week and tax time stops being a fire drill.

Set a fixed close and gather the week's paper

Pick an end-of-week slot and keep it. Friday afternoon or first thing before the next week starts both work; consistency matters more than the exact hour. Before you begin, pull together the week's inputs in one place: the list of jobs completed, invoices sent, payments received, and every receipt and bill the crew and office generated. A close is fast when the paper is gathered and slow when you are hunting for it, so make gathering the first habit.

Step 1: Reconcile completed jobs against invoices sent

This is the step that finds lost money. Take every job marked complete this week and confirm each one has an invoice. The gap between "work done" and "invoice sent" is where revenue quietly disappears: a tech closed the job, the office got busy, and the invoice never went out. Chase every completed-but-unbilled job now, while the details are fresh, and get it invoiced. See related: How to Invoice the Same Day the Work Is Done. Do the reverse check too, an invoice with no matching completed job usually means something was billed early or entered wrong.

Step 2: Record every payment that came in

Go through the payments received this week, cash, card, check, transfer, and mark the matching invoices paid. Two things matter here:

• Match each payment to its invoice, so your list of who still owes you stays accurate. An unapplied payment makes you chase a customer who already paid.
• Do not lose cash payments. Cash that comes in and is not recorded the same week is cash that vanishes from the books and shows up as a mystery. Log it against the job immediately.

What is left unpaid after this pass is your real accounts receivable, the list you work for collections.

Step 3: Enter and categorize the week's expenses

Handle every bill and receipt while you still know what it was for. For each one, record the amount, the vendor, and the category (materials, fuel, tools, subcontractor, office, and so on). A shoebox of uncategorized receipts in December costs you real money in missed deductions and bad numbers. A receipt entered the week it happened is a receipt you actually remember.

• Capture crew receipts for parts and fuel before they live in a truck door for a month.
• Note which job a cost belongs to where you track job costs, so your per-job margin stays real.
• Set aside the tax piece. Any sales tax you collected this week is money you hold and owe, not revenue. Keeping it visible now prevents spending it by accident.

Step 4: Chase the missing pieces before they go cold

A close is also a hunt for what is not there yet. Run down the gaps while people can still answer:

• Unlogged time: a tech who has not entered hours means a job you cannot cost or fully bill.
• Missing receipts: an expense on the card with no receipt attached.
• Unapproved change orders: extra work done but never captured, which is unbilled revenue.

Asking on Friday gets you a straight answer. Asking in three weeks gets you a shrug.

Step 5: Glance at the week's shape

With the records clean, take two minutes on the picture they paint: roughly what you billed, what came in, what went out, what is still owed to you. You are not doing deep analysis; you are sanity-checking that the week looks the way it felt and catching anything wildly off. A week that felt busy but shows little billed is a flag worth chasing before it repeats.

Step 6: Back up and hand off clean

Finish by protecting the work. Make sure the records are saved and backed up, not living only on one laptop or one pile of paper. If a bookkeeper or accountant handles the deeper work, this weekly close is what you hand them, and clean weekly input is what keeps their bill and your surprises small. A week closed properly is a week you never have to reconstruct.

References

• See related: How to Do a Weekly Cash-Flow Check in Under an Hour
• See related: How to Invoice the Same Day the Work Is Done
• Internal Revenue Service (IRS), recordkeeping for small business (Publication 583 concepts)
• U.S. Small Business Administration (SBA), bookkeeping basics for small business