Partial payments and payment plans

A payment plan you carry yourself leaves your business funding the unpaid balance after the work. Decide how much cash you can afford to leave outstanding, put payment dates and amounts in writing, and check consumer-credit rules before making plans a regular offer.

Three things get called "paying in installments"

They look alike on the invoice and they are completely different risks.

Progress billing spreads billing across the job; whether it covers costs depends on when each draw is actually paid. A customer payment plan leaves you carrying a balance after completing the work and paying its costs. Do not let a customer talk you into one by calling it a draw schedule.

Calculate how much of your direct cost remains unpaid

Start with the cash cost you would have to fund if the customer stopped paying.

Example: a fictional $6,400 condenser replacement with these assumed costs:

• Equipment: $3,100
• Subcontracted electrical: $450
• Labor cost, two techs for a day: $750
• Direct cost: $4,300. Gross profit: $2,100.

Collecting $4,300 covers this example’s direct costs. The remaining $2,100 is gross profit, still needed for overhead and net income. Collecting only $2,000 leaves you funding $2,300 of direct costs as well. Neither plan is risk-free.

One caution before you call that a down payment: states can cap what a residential contractor may take before work starts. If a cap applies, invoice for work actually performed as allowed and start the carried balance from what remains. Deposits and down payments covers the question; your licensing board publishes the current rule.

Set a limit on both the amount and duration you can carry. Use your accounting records to check a repeat customer’s payment history, and do not offer a plan that would prevent you paying suppliers or payroll.

A four-payment plan, run out

Same illustrative job: $2,000 paid after installation, with the remaining balance over four months:

Read the last column. You have not recovered direct costs for roughly twelve weeks, until the October 1 payment, and see no gross profit before then. If the plan quietly stops in September — she changes banks, the card expires, her hours get cut — you have paid $4,300 to collect $4,200.

That is the argument for short schedules and a small number of payments. Longer schedules create more chances to fail and can run past remedies you expected to use. Consumer-credit rules have their own thresholds, so a short plan is not automatic clearance.

Write the dates, amounts and missed-payment procedure

Record the plan in writing so both parties can check the amounts, dates and conditions. A verbal agreement can still create obligations, but is harder to evidence. Include:

• Every payment as a dollar amount and a calendar date. Not "monthly." Not "four payments." $1,100 on the 1st of August, September, October and November 2026.
• The agreed payment method. You may offer optional autopay through your payment provider. Regulation E requires signed or similarly authenticated authorization for recurring consumer-account debits and a copy for the customer. It also generally prohibits conditioning credit on repayment by preauthorized electronic transfers. Offer a permitted alternative; do not make bank autopay a mandatory term.
• What a missed payment does. State the lawful next step and any fee. If you want the full remaining balance to become due after a missed installment, have that acceleration clause reviewed for required notice and any chance the customer must have to correct the default. That fee clause is its own decision, and it has to exist before the job.
• What the balance does not suspend. If you offer a workmanship warranty, say whether it stays in force during the plan. Do not leave that to month three.
• The invoice and balance it belongs to. Reference the full $6,400 bill, the $2,000 already received and the $4,400 carried balance. Use the accounting tool’s installment process without billing the same work twice. Tax income timing follows your accounting method, not how many reminders or installments you issue.

Check consumer-credit rules before offering plans regularly

A plan can be regulated consumer credit even without interest. Do not treat “interest-free” as an exemption.

Regulation Z’s creditor definition considers regular extension of consumer credit and credit subject to a finance charge or payable by written agreement in more than four installments, excluding a down payment. State coverage can differ. That can bring disclosure, rate-limit, or licensing questions. Do not launch a standard interest-bearing plan from a template; get state-specific advice. If interest is what you actually want, third-party financing moves much of the credit administration to a lender.

When a payment is missed

Call the same week. Not a letter, not a portal reminder — a call, from you, asking what happened. Check whether it is a payment-method problem, a dispute or an inability to pay, then record the next agreed step.

Then know what you still have, because two clocks are already running against you.

Mechanic's lien deadlines run from the work, not from the schedule. The trigger and deadline differ by state, and preliminary notice may be required much earlier. If a lien is your backstop, get the actual deadline and notice sequence before the plan starts.

Small claims has a ceiling, and it may be lower for your business than for you. Check the current cap and entity rules with the court before counting on it.

Include the schedule in the approved quote

In DoneQuote, write the payment dates, amounts and conditions in the quote’s payment terms. Review the scope, prices and schedule before sending for digital approval. Use your accounting records and payment provider to track installments and any separate payment authorization.

Set a cash limit and review missed payments promptly

Collect costs as early as the contract and project-state payment rules allow. Keep the carried balance and duration within a limit your business can fund, record every date and dollar, and review missed payments promptly. Compare a lender’s offer if the proposed plan exceeds that limit.