How do you collect final payment on job completion?
Send your final invoice the day the job ends. Then offer digital payment options and follow up in writing within 48 hours if you don't see payment. This post covers the mechanics of getting paid faster on completion.
Invoice on completion day, not later
The biggest delay contractors create is sitting on invoices. You finish the job on Tuesday but send the invoice Thursday or Friday. That's two days of lost time. Send the invoice the same day work ends, or the next morning at worst. Include a clear due date on the invoice itself—not Net 30, but something like "Due by [specific date, 5-7 days out]." For residential jobs, customers expect a physical copy or PDF they can handle. For commercial, the invoice needs to be in their system already, addressed to the right department. Get the email or mailing address correct before you leave the site. A misrouted invoice delays payment another week.
Offer payment methods customers actually use
Cash and check slow you down. Digital payments move money in 1-3 days. Offer ACH transfer, credit card, or digital wallet options from day one. ACH is cheapest for you and for them. Credit card costs you 2-3 percent but guarantees same-day funding. Some customers won't send a check at all anymore—they expect to tap a button. Don't make them hunt for payment instructions. Put payment links directly on the invoice. Phone customers who request one to confirm their payment method before you leave. For residential jobs, a Venmo or Square Cash link works. For commercial work, ACH details or your merchant portal are standard.
Follow up in writing within 48 hours
Invoice sent doesn't mean it's been read. Send a brief follow-up email or text 48 hours after invoicing if you haven't received payment. Not a demand—just a confirmation. "Hi John, I sent your final invoice for [project name] yesterday at [amount]. Let me know if you have questions or need to adjust the payment method." This catches problems early: they didn't get the email, they need a different invoice format, or they're waiting on approval from someone else. For jobs under $2,000, most customers pay within 5 days of a clear prompt. For larger jobs, follow up again at day 10 if nothing's landed. Keep follow-ups professional and factual. No tone.
Require deposit for large jobs beforehand
Final payment collection is easier if you've already collected partial payment upfront. A 30-50 percent deposit on jobs over $5,000 reduces your cash flow risk and signals the customer is serious. This also covers material costs and gives you leverage if something changes mid-project. Document the deposit requirement in writing before work starts. Large commercial jobs often require invoicing in stages: 30 percent on start, 40 percent at midpoint, 30 percent on completion. Residential customers may push back, but most accept 25 percent down if you explain it covers materials and scheduling. Make deposits non-refundable unless you fail to perform. This protects both sides.
Bottom line
Send your invoice the same day work finishes, offer digital payment options, and follow up in writing within 48 hours. Deposits on large jobs eliminate final payment delays entirely.