Showing monthly payments at the kitchen table without getting in trouble

Showing monthly payments on a replacement estimate works for a simple reason: most households don't keep a five-figure repair fund. In the Federal Reserve's latest survey of household finances, 37% of adults said they would not cover a $400 emergency expense with cash or its equivalent¹. A $12,000 system is thirty of those. The monthly number lets a family compare the option against a budget they actually live on.

It's also where contractors get into trouble. Not usually at the kitchen table, but on the yard sign, the website banner and the Facebook ad that says "$89 a month," and in the fine print of "no interest for 12 months." This post covers what federal lending rules say about showing payments, the two traps that hurt customers most (deferred interest and hidden dealer fees), and a simple rule for presenting a monthly figure honestly.

This is a practical guide, not legal advice. Your lender's compliance team and your own attorney get the last word, especially on state law.

The kitchen table and the yard sign are different rooms

Federal Truth in Lending rules, written into Regulation Z, put special requirements on credit advertising. The question that decides most contractor situations is whether what you're showing is an advertisement at all.

The official interpretation is helpful here. It says only commercial messages that promote consumer credit are advertisements, and it specifically excludes personal contacts:

So a tech showing a specific homeowner a monthly figure for a specific system on a specific estimate is, under that reading, not advertising credit². The same interpretation makes clear the advertising rules apply to anyone who advertises credit, not just lenders. A contractor's truck wrap, website, mailer or social post that promotes a payment amount is an ad.

Two cautions keep this from becoming a loophole:

• Deception rules still apply at the table. The FTC Act's ban on deceptive practices covers what a salesperson says in a living room. A monthly figure that the customer can't actually get is a problem whether or not it's an "ad."
• The lender's own disclosures still have to happen. When the customer applies, the lender provides the formal Truth in Lending disclosures. Your estimate should never contradict them.

What turns an ad into a disclosure obligation

For closed-end credit, the kind most equipment loans are, Regulation Z lists four triggering terms. If an ad states any of them, it must also state three disclosures³.

The official examples are blunt: "$25 weekly" and "payable in installments of $103" are triggering terms⁴. Phrases like "monthly payments to suit your needs" or "regular monthly payments" are not. If your ad states a rate at all, it must be stated as an annual percentage rate³.

Open-end plans, such as a branded financing card offered at the point of sale, have their own triggering terms under a separate section, including finance charges and periodic rates⁵.

The FTC has taken this seriously in other industries. It alleged that a group of Arizona auto dealerships misrepresented important financial terms in vehicle ads, among other charges, and in 2022 returned more than $415,000 to 3,508 consumers⁶. Car dealers aren't contractors, but the principle carries over: a payment number that leaves out the terms behind it misleads.

Trap one: "no interest if paid in full"

Many point-of-sale lenders offer deferred interest promotions. They look like 0% financing. They aren't. If the full balance isn't paid by the end of the promotion, interest is charged back to the original purchase date, on the full original amount.

Regulation Z requires ads for these plans to say "if paid in full" in immediate proximity to every "no interest" claim, to state the promotional period clearly, and to say that interest will be charged from the purchase date if the balance isn't paid in full⁵.

How often does the trap close? The Consumer Financial Protection Bureau studied deferred interest promotions and found that for borrowers with subprime credit scores, about 43% ended up charged the retroactive interest⁷. In a later report, it found subprime consumers made up only 11% of promotional spending but paid 24% of all deferred interest charges⁸.

What that looks like on a $12,000 system

A worked example, with assumed terms. A homeowner finances $12,000 on a 12-month deferred interest promotion with a 26.99% standard APR. They pay $958 a month, intending to clear it, but a car repair in month nine leaves $500 unpaid at month 12. Depending on how the lender calculates it, the interest charged back to day one on the declining balance comes to roughly $1,800.

A $500 shortfall turns into a $1,800 bill, and the homeowner will remember whose name was on the truck. If you offer deferred interest plans, make sure customers hear "if paid in full" out loud, see the date, and understand what happens if they miss it. Better yet, offer a true fixed-rate installment option alongside it.

Trap two: the dealer fee nobody mentions

Many "0%" or low-rate promotions are paid for by a dealer fee: the lender charges the contractor a percentage of the financed amount. The contractor then has a choice: absorb the fee, or raise prices for customers who finance.

The CFPB examined this in residential solar lending and found that hidden fees typically ran from 10% to 30% of the cash price, sometimes above 50%, rolled into the loan principal and usually left out of the cost of credit the consumer sees⁹. Its example: a $30,000 cash price plus a $9,000 fee becomes a $39,000 loan.

HVAC and plumbing financing isn't solar, and fees on the plans contractors use vary widely. But the test is the same, and it's one any customer could run:

If that number isn't zero, you have a choice to make on purpose. Options that hold up:

• One price for everyone. Build the average dealer-fee cost into overhead, like card processing fees. Simple and honest.
• A visible cash discount. If you price for financing and offer a stated discount for paying cash, the customer sees both prices.
• Fewer promotional plans. A standard-rate plan with no dealer fee costs you nothing and is easier to explain.

What doesn't hold up is a single "total" that's secretly higher for financed customers.

The three-number rule for every estimate

Here's a rule you can train in one meeting and check on every estimate. Never show a monthly figure alone. Show three numbers together:

1. 1

   The total price

   The full cash price of the option, the same price a cash customer would see. It's the biggest number on the card, not the smallest.

2. 2

   The monthly figure

   Labelled as an estimate, with 'on approved credit' if it depends on the lender's decision.

3. 3

   The terms that produce it

   APR and number of months, in plain words: '9.99% APR for 120 months.' If it's a deferred interest promotion, the words 'if paid in full' and the date.

Then add the number customers most often never see: the total of payments. The same $12,000 looks very different stretched across longer terms:

Worked examples on a $12,000 balance. Standard amortization; real lender terms and fees vary.

Showing the 180-month line is not bad salesmanship. It's how a customer decides the 60-month line is worth stretching for. People make better choices with the full picture, and they don't feel tricked later.

Words that work, and words to drop

The last one deserves a word. Energy savings claims next to a monthly payment invite a comparison the customer will check against their utility bill. If you show savings, show your assumptions and label it an estimate.

A ten-minute audit of the ads you already run

Most shops have payment language scattered across places nobody has looked at in a year. Before you train anyone, find it. Open your website's home page and financing page, your Google Business Profile, the last three social posts that mention financing, your truck wraps and yard signs, and any mailer still in a drawer.

For each one, ask three questions. Does it state a payment amount, a number of months, a finance charge or a down payment? If yes, does it also state the down payment, the full repayment terms and the APR? And does it say "no interest" anywhere without "if paid in full" right next to it? Anything that fails gets fixed or pulled. The fastest fix is usually to go vague: "Financing available on approved credit. Ask for details."

Then send the list to your lender and ask whether it has approved ad language or will review a draft. Asking costs you an email.

The paperwork you can't skip

When you help a customer get financing for your work, a few things should happen every time:

The Holder Rule notice deserves a sentence of its own. Under the FTC's rule, a seller who arranges consumer credit has to make sure the contract says any holder of it is subject to the claims and defenses the customer could raise against the seller¹⁰. In plain terms: if the install is botched, the customer can raise that with the lender. Reputable lenders build this into their contracts. Check that yours does.

Where TradesWork fits, and where it doesn't

When the office turns financing on and adds plans, TradesWork can show an "as low as" monthly figure on each estimate option, worked out from the plan's term and APR and labelled as an estimate, next to the option's total. TradesWork doesn't connect to financing lenders yet, so applications run through your lender's own process with office help. That keeps the lender's terms, not our math, as the final word.

For how options are laid out on the phone, see good, better, best estimates. If you're quoting through supplier increases, A2L replacement pricing covers price holds, and selling heat pumps after 25C covers the incentives that often sit next to a monthly figure. The glossary entry on good, better, best has the short version for training new techs.

Monthly figures help families make big decisions. Shown with the total and the terms, they build trust. Shown alone, they're the first thing a customer quotes in a bad review.