Dealer 0% APR promotional financing on farm equipment is a good deal only when it costs less than taking the cash rebate or discount and financing the lower price through an outside lender. Manufacturer finance arms often make you pick one or the other, so the rebate you give up works like interest paid the day you sign. This guide turns that lost rebate into an interest rate and runs the comparison on farm and construction examples, including term limits, captive lender conditions and cash flow.
How a 0% offer and a cash rebate trade off
Many equipment makers run their own finance companies, often called captive lenders. BDC notes that many manufacturers have financing divisions that "offer discounts to stimulate sales at dealerships," often with deals "where you're offered the option of taking a lower interest rate or getting cash back" (BDC, read October 2026). The FTC's consumer guide to car financing (July 2022) describes similar manufacturer incentives on cars, "lower finance rates or cash back," and tells buyers to compare financing offers from several creditors and the dealer (FTC).
When the offer is either-or, the rebated price is what the machine costs in cash. Choosing 0% means borrowing that cash price and repaying the full undiscounted amount, so the forfeited rebate is your interest, paid up front.
Don't count on the contract to show that cost. Regulation Z, the federal Truth in Lending rule, lists "an extension of credit primarily for a business, commercial or agricultural purpose" among its exempt transactions (12 CFR 1026.3, eCFR text as of October 2026). That rule doesn't require a farm or construction equipment contract to show an APR, so the paperwork can read 0% even after you gave up thousands in cash back.
How to work out the interest rate hidden in a 0% offer
The implied interest rate is the rate at which the 0% payments exactly repay the discounted cash price. In Excel or Google Sheets, enter =RATE(number of payments, -0% payment, price after rebate) * 12. The * 12 annualizes a monthly rate, so drop it for annual payments. If you'd make the same down payment either way, subtract it from both prices first.
The farm example below runs on assumptions, since promotions, discounts and terms vary by dealer, manufacturer and model. A dealer quotes a $200,000 tractor at 0% or with a $20,000 cash discount, so the 0% route repays $200,000. For the outside loan we assume 8.5%, which is the 7.00% bank prime rate in the Federal Reserve's H.15 release for October 5, 2026 plus an assumed 1.5 points.
| Promo term | 0% payment | Implied rate | Outside payment, 8.5% on $180,000 | Outside total | Cheaper choice |
|---|---|---|---|---|---|
| 60 months | $3,333 | 4.2% | $3,693 | $221,579 | 0% by $21,579 |
| 36 months | $5,556 | 7.0% | $5,682 | $204,558 | 0% by $4,558 |
| 24 months | $8,333 | 10.3% | $8,182 | $196,369 | Discount by $3,631 |
Over 60 months the forfeited $20,000 costs about 4.2% a year, well under 8.5%, so 0% saves about $21,600. Squeeze the same discount into 24 months and the implied rate climbs to about 10.3%, so taking the discount and borrowing outside comes out about $3,600 ahead. Totals compare fairly here only because both choices run the same term.
Farmers who qualify for USDA credit have another benchmark. FSA set its direct farm operating loan rate at 5.375% for October 2026, effective October 1, and says its loans help producers "purchase equipment and storage structures or meet cash flow needs" (USDA FSA). At that rate and the same term, the 60-month 0% offer still wins, while the 36-month and 24-month versions favor the discount. FSA's program rules set eligibility and terms, and our farm financing guide covers the options.
When dealer 0% financing on farm equipment is a better deal than an outside lender
This table runs the formula for common combinations, assuming monthly payments, no fees and the rebate measured as a share of the amount you'd finance at 0%.
| Promo term | 3% rebate | 5% rebate | 8% rebate | 10% rebate | 12% rebate |
|---|---|---|---|---|---|
| 24 months | 2.9% | 5.0% | 8.1% | 10.3% | 12.6% |
| 36 months | 2.0% | 3.4% | 5.5% | 7.0% | 8.5% |
| 48 months | 1.5% | 2.5% | 4.1% | 5.3% | 6.4% |
| 60 months | 1.2% | 2.0% | 3.3% | 4.2% | 5.1% |
| 84 months | 0.9% | 1.5% | 2.4% | 3.0% | 3.7% |
If an outside quote for the same term comes in below the table's number, take the rebate and borrow outside. If it's above, the 0% offer is cheaper. Fold documentation and origination fees into the outside rate first, since a 7.9% loan with a sizable fee can cost more than an 8.2% loan without one. Our equipment financing rates guide shows typical pricing by lender type.
Cash buyers can read the table the same way. Choosing 0% over the discount keeps cash in the business at the implied rate, which pays off when that cash would otherwise replace draws on a business line of credit at a higher rate.
A construction example where the short promo term squeezes cash flow
Assume a contractor buying a $120,000 excavator is offered 0% for 36 months or a $9,600 (8%) cash rebate, and an outside lender quotes an assumed 9% on the $110,400 balance.
| Option | Monthly payment | Payments | Total paid |
|---|---|---|---|
| 0% for 36 months | $3,333 | 36 | $120,000 |
| Rebate plus 9% loan | $3,511 | 36 | $126,385 |
| Rebate plus 9% loan | $2,292 | 60 | $137,503 |
The implied rate is about 5.5%, so on cost the dealer wins by about $6,400 against the same-term loan and about $17,500 against the longer one. The 0% payment, though, runs about $1,042 a month above the 60-month loan, which comes to roughly $37,500 more cash out of the business over three years.
That gap matters when the machine has to earn its payment from day one. Lenders weigh your debt service coverage ratio (DSCR), the cash available for debt payments divided by those payments, and a heavier payment can drag a thin ratio down just as you want to finance the next unit. You could ask for a longer promo term with a smaller rebate, take 0% and keep a line of credit for slow months, or take the rebate on a longer outside term and prepay when cash allows, after checking for a prepayment penalty.
Farm buyers should test promo payments against harvest receipts too. If monthly payments land in low-income months, ask whether the captive lender offers annual or semiannual schedules. In the RATE formula, use * 2 for semiannual payments and drop the * 12 for annual ones.
Captive lender restrictions to check before you sign
- Credit tier. The FTC's guide to car dealer ads warns that a low advertised APR "might only apply to 'highly' or 'well' qualified borrowers" (FTC, July 2022). Ask what rate applies in a lower tier and whether the rebate still applies.
- Financing conditions. The same FTC page lists restrictions such as having to "finance with a particular bank." Ask whether the rebate is open to cash buyers and buyers using an outside lender.
- Used equipment. BDC notes that vendor finance companies "will typically charge higher interest rates and finance a lower percentage of the cost of used equipment." Confirm in writing that the exact model, model year and attachments qualify.
- What gets financed. Ask whether attachments, freight, setup and warranties carry the 0% rate. BDC notes some banks finance up to 125% of the equipment price to cover transportation, installation and employee training, and may postpone principal payments for a period after purchase.
- Price first. The FTC's car guide notes that your total depends on the negotiated price, the APR and the length of the loan. Settle the price, then ask whether it changes with the offer you pick.
- Early payoff and default. Ask what happens if you pay off early, trade in before the term ends or miss a payment, and whether the contract reaches collateral beyond the machine.
- Specialized equipment. BDC says manufacturers of unique or specialized equipment often don't have in-house financing companies, which sends buyers to a third-party lender.
Manufacturer financing vs. a bank or outside lender: pros and cons
| Factor | Dealer or manufacturer financing | Outside lender |
|---|---|---|
| Rate | Promotional on qualifying new equipment, sometimes 0% | Set by each lender |
| Cash rebate | Given up when the offer is either-or | Available if the dealer allows it |
| Term | Set by the promotion | Chosen to fit your cash flow |
| Used and other brands | Vendor rates on used equipment typically higher, per BDC | Any brand, subject to lender rules |
| Related costs | Depends on the program | Some banks finance up to 125% of price, per BDC |
Outside lenders include banks, credit unions, online lenders and, for eligible farmers, FSA, and each one assesses credit and repayment ability on its own terms. EQ Funding routes one equipment financing application to lenders who compete for the deal, so you may have an outside number for the formula before you sit down with the dealer. Approval and terms vary by lender, and our guide on how to compare business loan offers shows how to line quotes up.
Tax points that can tilt a close comparison
IRS Publication 551 (revised December 2025) lists "rebates treated as adjustments to the sales price" among decreases to basis, so taking the discount lowers the cost you depreciate. It also says that if you buy property on a time-payment plan that charges little or no interest, your basis is generally the stated purchase price minus the amount considered unstated interest or original issue discount, and you generally have one or the other if your rate is less than the applicable federal rate (IRS Pub. 551).
A 0% contract can therefore carry an interest component for tax purposes that lowers your depreciable basis. Ask your tax preparer how to report it, and see our Section 179 guide for expensing rules. Canadian buyers should ask their accountant how Canadian tax rules treat the rebate and the financing.