The Monday Aging Sweep: auto repair invoice reminder emails and a weekly checklist

The Monday aging sweep is four habits that run every week, in the same order as the video:

1. The same-day invoice. Sent to the account contact the day the repair order closes, with the terms printed on it.
2. The Monday aging report. Opened every Monday, oldest first, so you see what's at 30, 60 and 90 days.
3. The reminders. A short note before the due date, one on it and one after, each a draft sent from your shop's real address.
4. The call list. Past your threshold, a person calls. Software doesn't chase.

Below are the reminder emails to copy, the weekly checklist, and the rules that keep collections friendly and legal.

Who this is for

Shops that bill on terms: fleets, commercial accounts, dealers that sublet to you, insurance-adjacent work. Most retail repair work gets paid before the keys go back, so if that's all you do, you need little of this. If you carry even a few net-30 accounts, you need all of it.

Why it slips

Nobody opens a shop to chase money. ShopView's cash flow guide makes a point that applies to any shop with terms: the payment clock starts when the job is finished, not when the invoice is sent. The same guide notes that net-30 or net-60 invoicing delays cash even on completed work.

Fleet terms can run longer. A 2013 Ratchet+Wrench piece on fleet service says payments on fleet accounts often run on a 60-day cycle, and one fleet shop owner in it typically carried about 150,000 dollars outstanding from large accounts. It's old, so read it as a pattern, not a benchmark. The pattern is that a forgotten invoice becomes a loan you never agreed to make.

Habit one, the same-day invoice

When the repair order closes, the invoice goes out that day. ShopView recommends digital invoices so customers receive bills by email immediately.

Checklist for every invoice on terms:

• Sent to the account's accounts-payable contact, not just the driver.
• Terms printed on it: net 30, due date, how to pay.
• The signed estimate or authorization attached or on file. Fullbay recommends keeping signed estimates and authorizations as documentation.
• The PO number, if the account uses them. A missing PO is the most common reason an AP department sits on an invoice.

Habit two, the Monday aging report

Every Monday, open the accounts receivable aging report sorted oldest first. ShopView lists aging with balances 30, 60 and 90 or more days overdue as a key metric, and recommends following up on aging receivables weekly rather than monthly.

What to look at, in this order:

1. Anything over 90 days. Each one goes on the call list today.
2. Anything between 61 and 90 days. Check the last contact date.
3. Anything that just crossed 30 days. Make sure the reminder went out.
4. Total by account. One account carrying most of the balance is a risk on its own.

Habit three, the reminders

Three short emails, each a draft a person can edit, sent from the shop's real address and signed by a real person.

Before the due date

Subject: Invoice [number] due [date]

Hi [name], a quick note that invoice [number] for [vehicle or unit] is due on [date]. The invoice is attached. Reply here if you need anything from us to process it. Thanks, [name], [shop]

On the due date

Subject: Invoice [number] due today

Hi [name], invoice [number] for [amount] is due today. If it's already on its way, thank you and please ignore this. If something is holding it up, reply and we'll sort it out. [name], [shop]

One week after

Subject: Invoice [number] is past due

Hi [name], invoice [number] for [amount] was due on [date] and we haven't seen payment yet. Could you let me know when to expect it, or who I should talk to? [name], [shop], [phone]

Send all three as your shop, under your shop's name. That matters for more than tone, as the next section explains.

Habit four, the call list

When an invoice passes a threshold you set, such as 15 days past due, it lands on one person's list with the customer, the amount, the age and the last contact. That person calls. Write down what the customer said and the date they promised payment, put the promised date on the calendar, and check it that day.

The rules that keep it friendly and legal

• Send as yourself. The CFPB's Regulation F says a debt collector includes any creditor that, in collecting its own debts, uses a name other than its own that would indicate a third person is collecting. No made-up "recovery department." This is general information, not legal advice, and state laws may add rules.
• Last resorts are costly. Fullbay notes collection agencies commonly take 20% to 50% of the original charge, and that a mechanic's lien process is long, has many deadlines and varies by state, so talk to a lawyer first.
• Bounced checks have their own path. The SBA notes that recovery options vary by location and may include small claims court or a collection agency.
• Long-time customers hear from someone who knows them. A fleet that sends you ten vans a year gets a call from the manager, not a template.

Prevention that saves the most chasing

• Credit limits on new accounts, which ShopView says to set and enforce, along with deposits of 50% on jobs over 2,000 to 3,000 dollars and progress billing on multi-day work.
• A cap on exposure. A consultant quoted by Ratchet+Wrench advises no single account above 20 percent of fleet business.

The weekly checklist

1. Monday: open the aging report, oldest first.
2. Approve the reminder drafts that are due.
3. Call everything past your threshold and log the answer.
4. Put promised dates on the calendar.
5. Once a month, review credit limits and which accounts paid late.

How to tell it worked

Write down three numbers today: total over 60 days, total over 90 days, and the number of accounts with no contact in two weeks. Check them each Monday. After a month the first two should be falling and the third should be zero.

The longer explanation is on auto repair collections automation. If your money problem is estimates that never get approved, see auto repair estimate follow up software.