What net 30 means
"Net 30" means the full invoice amount is due 30 days after the invoice date, or after another start date the two parties agree on. It is a payment term you choose to offer, not a legal right of the customer. Many fleets expect it, because their own accounts payable process runs on a monthly cycle, and some will not do business with a shop that requires payment at the time of service.
For a repair shop, net 30 is a loan to the customer. You pay for parts, fuel and payroll now and collect a month or more later. That is fine when it is planned for and controlled. It becomes dangerous when every new account gets terms by default and nobody watches the balance.
Step 1: Decide who qualifies
Write a short credit policy before the next fleet asks. It should answer:
- Who can get terms: for example, established businesses that complete a credit application and provide trade references.
- What you check: business registration, how long they have operated, trade references from parts suppliers or other vendors, and, for larger limits, a business credit report.
- Starting limit: a dollar cap on open balance for new accounts, raised after a record of on-time payment.
- Who approves: the owner or one named manager.
New and unknown customers pay at the time of service, by card, ACH or a card on file, until they qualify.
Step 2: Put the terms in writing
A signed credit agreement or service agreement avoids most disputes. Include:
- Payment due date, for example net 30 from invoice date.
- Accepted payment methods.
- Credit limit and what happens when it is exceeded.
- Late fee or finance charge, if you charge one. Rules on late fees and interest vary by state, so have your terms reviewed before you rely on them.
- Who at the fleet can authorize work and what proof of authorization you need, such as a purchase order number.
- What documentation must be on each invoice for the fleet to pay it.
Step 3: Invoice so the fleet can pay without asking questions
Most slow payments are not refusals. They are invoices stuck in the fleet's approval process because something is missing. Each invoice should include:
- Purchase order or authorization number, if the fleet uses them.
- Unit number, VIN, and mileage or engine hours.
- Date and location of service.
- Complaint, cause and correction for each repair line.
- Labor hours and rate, parts with part numbers and quantities, and any fees.
- Technician notes and photos where useful.
Send the invoice the same day the work is done, to the address the fleet's accounts payable team uses. A 30-day clock that starts a week late is a 37-day clock. See how to invoice fleet customers.
Step 4: Track receivables by age
An accounts receivable aging report groups open invoices by how long they have been outstanding: current, 1 to 30 days past due, 31 to 60, 61 to 90, and over 90. Review it every week. The older an invoice gets, the less likely it is to be paid in full. See accounts receivable aging.
Two numbers are worth watching each month:
- Total past due as a share of total receivables.
- Days sales outstanding (DSO): roughly, receivables divided by average daily credit sales. A rising DSO means customers are paying slower. See days sales outstanding.
Step 5: Follow up on a fixed schedule
A simple, polite routine works better than occasional angry calls:
- Before the due date: for large invoices, confirm the fleet received and approved it.
- Due date: reminder with the invoice attached and a payment link.
- 7 days past due: call the accounts payable contact and ask when it is scheduled to pay.
- 30 days past due: send a statement of all open invoices; apply your late fee if your agreement allows.
- 45 to 60 days past due: hold further credit work until the account is brought current, and tell the fleet manager, not just accounts payable.
Statements matter for fleets with many units: one monthly statement listing every open invoice is easier for them to reconcile. See statement billing.
Step 6: Handle disputes quickly
If a fleet disputes one line, ask them to pay the undisputed amount while you resolve the rest. Most disputes are about authorization or documentation, which is why photos, signed estimates and complete repair lines are worth the effort.
Step 7: Know when to stop extending credit
Signs an account is becoming a risk:
- Payments sliding from 30 to 45 to 60 days.
- Partial payments without explanation.
- New contacts asking for more work while old invoices are open.
- Requests to raise the credit limit while past due.
Put the account back on payment at time of service until it is current. That protects you without ending the relationship.
Government fleets pay on federal or state rules
Work for federal agencies follows the Prompt Payment rules in 5 CFR Part 1315. Unless the contract says otherwise, payment is generally due 30 days after the start of the payment period, which is usually tied to receipt of a proper invoice, and 5 CFR 1315.10 sets interest penalties when an agency pays late. A proper invoice has required content, so follow the agency's invoicing instructions exactly. State and local government fleets follow their own prompt payment laws, which vary.
The tax side of unpaid invoices
Bad debts are not always deductible. The IRS explains in Topic 453 that to deduct a bad debt you generally must have previously included the amount in income, and that cash method taxpayers generally cannot take a bad debt deduction for unpaid fees and similar items. To show a debt is worthless, you must show you took reasonable steps to collect it. Ask your accountant how this applies to your shop, and keep records of your collection efforts.
Cash flow planning
Before you take on a large fleet on net 30, estimate how much money the account will tie up. A fleet that buys $20,000 of work a month on net 30, and pays in 45 days, ties up roughly $30,000 of your cash at any time (illustrative numbers). Make sure your bank balance or a line of credit can carry that, plus parts for the work.
Offering an early payment discount
Some shops offer a small discount, such as a percentage off when the fleet pays within ten days, written as "2/10 net 30" for a 2 percent discount within 10 days. The example rate is only an illustration. A discount costs you margin on every invoice paid early, so compare it with what slow payment costs you in borrowing and staff time before you offer one. If you do offer it, state the terms on every invoice and in the agreement, and apply the discount only when payment actually arrives inside the window.
Common mistakes
- Giving terms to everyone who asks.
- Sending invoices days after the work.
- Missing purchase order numbers or unit details that block approval.
- No written late fee policy, or one that is never applied.
- Doing more work for an account that is already 60 days past due.
How software helps
MetaFleet supports per-customer payment terms, Net 30 billing through the customer portal, statements, card holds, pay links, Stripe payments, late fees flagged for review, and QuickBooks Online sync; see invoicing, payments and fleet customer portal, or get a walkthrough.