Invoicing & Payment: the full procedure
Invoice promptly after completion and collect payment cleanly per the agreed terms.
- Applies to: Owner, Office/Billing Staff
- Frequency: Every completed job
- Scope: Covers invoicing and payment collection after job completion. No safety/chemical content.
What you need
- Invoicing software
- Payment processor (card/ACH)
- Accepted estimate reference
- Completion/sign-off record
- Receipt template
- Accounts-receivable tracker
The procedure, step by step
- Confirm completion — Verify the job is signed off and the agreed scope was delivered before invoicing.
- Build the invoice from the estimate — Generate the invoice from the accepted estimate so amounts and scope match exactly, plus any approved change orders.
- Apply taxes and fees — Apply applicable taxes and any agreed fees per your jurisdiction and accounting setup.
- Send promptly — Send the invoice immediately after completion while the work is fresh, with clear due date and payment methods.
- Offer easy payment — Provide convenient payment options (card, ACH, on-site) to speed collection.
- Record payment — Record the payment against the invoice and issue a receipt to the customer.
- Follow up on overdue — Track unpaid invoices and follow up on a set schedule per the company's AR process.
- Close the job — Mark the job paid and closed and file the record for accounting and warranty reference.
Quality check before you finish
- Completion/sign-off confirmed before invoicing
- Invoice matches accepted estimate plus approved changes
- Taxes/fees applied correctly
- Invoice sent promptly with clear due date
- Convenient payment options offered
- Payments recorded and receipted
- Overdue invoices tracked and followed up
This is a free, source-anchored standard operating procedure (SOP) you can print and hand to staff. It documents the work sequence for a Pressure Washing business — not safety or regulatory rulings, which defer to the cited authorities, the applicable code, and your own health-and-safety plan. Open the tool above to print it, toggle ink-saver, or (with a free ToolFluency Business account) edit it to match your own workflow.
Sources
- SBA (sba.gov)
- UAMCC (uamcc.org)
- IRS (irs.gov)
About Free Invoicing SOP
Free printable SOP for pressure washing invoicing and payment collection after job completion. No signup.
How to use
- Read the full procedure top to bottom before the work — the SOP runs in order and each step builds on the last.
- Toggle Ink-saver (black & white) for a cheaper mono print for the binder; leave it off for the full-color version.
- Click Print SOP to print or save as PDF. Print one per crew, laminate it for the binder, or attach it to the job in your scheduling system.
- Train new hires on it and have staff sign off. Found something out of date? Use the feedback link — flagged SOPs are re-researched against the source list.
Frequently asked questions
When should I send the invoice?
Immediately after the job is signed off and complete. Prompt invoicing while the work is fresh in the customer's mind leads to faster payment and fewer disputes.
How do I handle overdue invoices?
Track unpaid invoices in an accounts-receivable list and follow up on a set schedule per your AR process. Offering easy payment options up front reduces how often invoices go overdue.
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