Generic loan calculators stop at the monthly payment. A truck payment isn't a monthly number — it's a per-mile cost that has to come out of every load you haul. This calculator gives you the payment, the total interest, the all-in cost of the truck, and what the payment costs you per mile at your monthly miles, plus 2026 financing benchmarks so you know if your quote is fair.
Financing $75,000 of an $85,000 truck at 9.5% APR over 48 months costs about $1,884/month (~$435/week) with $15,443 in total interest — about 21¢ per mile at 9,000 miles a month. Published 2026 truck-loan APRs run ~4–8% at banks to 20%+ at specialty lenders.
Standard amortization math on your own inputs; APR benchmarks are published 2026 ranges (Bankrate, NerdWallet, LendingTree), not quotes. Not financial advice. Updated July 2026.
Enter the truck price, your down payment, the APR you were quoted, the term, and the miles you actually run each month. You get the monthly payment, the weekly equivalent, the total interest, the all-in cost of the truck, and the payment per mile — the number that plugs straight into your cost-per-mile math.
Monthly payment uses the standard amortization formula: loan × r ÷ (1 − (1 + r)−n), where loan = price − down, r = APR ÷ 12, n = months (at 0% APR it's simply loan ÷ months). Total interest = all payments − loan. All-in truck cost = down payment + all payments. Payment per mile = monthly payment ÷ monthly miles. Estimates only — your lender's contract governs. See how the payment fits your full numbers with the cost-per-mile calculator and break-even rate.
Truck financing prices off your credit, your time in business, your down payment, and the truck's age. These are the published 2026 ranges — if your quote lands well above the band for your profile, shop it before you sign.
| Lender type | Published 2026 APR range | Who typically qualifies |
|---|---|---|
| Traditional bank | ~4–8% | Strong credit (roughly 720+), time in business, financials in order |
| Dealer captive finance | ~5–9% | Decent credit buying a new or late-model truck from that dealer |
| Online / alternative lender | ~6–12% | Good credit (roughly 670+), faster approvals, lighter paperwork |
| Specialty / subprime | ~12–35% | Credit below ~680, new authority, or older/high-mile trucks |
Compiled from published 2026 lender guides (Bankrate, NerdWallet, LendingTree) — published ranges, not quotes. Guides report the practical floor around a 600 personal score at alternative lenders, and starting rates roughly 2–5 points higher below a ~680 score. Some truck lenders advertise a bare interest rate; always compare APR (which includes origination/doc fees) to APR.
| APR | Monthly payment | Total interest | Roughly where it lands (2026) |
|---|---|---|---|
| 6% | $1,761 | $9,546 | Bank financing, strong credit |
| 9.5% | $1,884 | $15,443 | Online lender, good credit |
| 12% | $1,975 | $19,802 | Top of the good-credit online band |
| 18% | $2,203 | $30,750 | Specialty lender, thin or bruised credit |
| 25% | $2,487 | $44,366 | Deep subprime — interest rivals half the truck's price |
Same truck, same term — the only change is the rate. From 6% to 25% APR the interest bill grows from $9,546 to $44,366: a $34,800 difference for the identical truck. That's why fixing your credit score or waiting one more year in business can be worth more than any negotiation at the dealer.
| Down payment ($85,000 truck) | Amount financed | Monthly @ 9.5%/48 mo | Total interest |
|---|---|---|---|
| $0 (0%) | $85,000 | $2,135 | $17,502 |
| $8,500 (10%) | $76,500 | $1,922 | $15,752 |
| $17,000 (20%) | $68,000 | $1,708 | $14,002 |
| $25,500 (30%) | $59,500 | $1,495 | $12,252 |
Every 10% down on an $85k truck cuts the payment by roughly $213/month and the lifetime interest by about $1,750 at this rate — and a bigger down payment often unlocks a better rate tier too. But don't drain the cash cushion you need to run: the startup-cost calculator works out the 90-day cushion first.
Two owner-operators can sign the identical $1,884/month loan and live completely different lives with it. The difference is miles. A truck payment is a fixed cost, so every extra mile you run spreads it thinner:
| Miles per month | 6,000 | 8,000 | 9,000 | 10,000 | 12,000 |
|---|---|---|---|---|---|
| $1,884 payment, per mile | $0.31 | $0.24 | $0.21 | $0.19 | $0.16 |
At 6,000 miles a month the payment eats 31¢ of every mile; at 12,000 it's 16¢ — half the burden, same truck. This is why slow months hurt twice: fewer paid miles and a heavier per-mile payment. Put your real number into the calculator above, then drop it into your full cost per mile.
If a carrier is pitching you a lease-purchase because "you can't get financed," check that premise first — published 2026 guides put the practical credit floor around 600 at alternative lenders. Even at a steep 18% APR, a $75,000 loan over 48 months costs about $30,750 in interest — while a typical lease-purchase can run tens of thousands more than financing the same truck, with zero equity until the final balloon. A loan builds equity from the first payment and the truck is yours to run under any authority. Run the program you were quoted through the lease-purchase calculator and compare its total against the all-in loan cost above; the cheaper path is usually the boring one.
Estimates and published benchmarks for planning only — not financial advice, and not a loan offer or quote. Your lender's contract governs. Last updated July 2026. Built by TruckMargin.
Published 2026 ranges run roughly 4–8% APR at traditional banks for strong credit, 5–9% at dealer captive lenders, and about 6–12% at online lenders for good credit. Below a ~680 score, published guides report starting rates roughly 2–5 points higher, and specialty/subprime financing can reach 20–35% APR. Always compare APR — which includes fees — not the bare interest rate.
With $10,000 down and $75,000 financed at 9.5% APR over 48 months, the payment is about $1,884/month (~$435/week) with about $15,443 in total interest. At 9,000 miles a month, that payment alone costs about 21¢ per mile. The calculator recomputes it for your own price, rate, and term.
If you can qualify, financing is almost always cheaper and builds equity from the first payment; in a lease-purchase you own nothing until the final balloon and can walk away with zero. Even a high-APR loan usually totals less than a typical lease-to-own program on the same truck. Compare both with the lease-purchase calculator.
Published 2026 guides put the practical floor around a 600 personal score at online/alternative lenders, ~670+ at traditional banks, and the best rates above ~720 with time in business. Lenders also weigh time in business, your down payment, and the truck's age and mileage.
A used truck borrows less but usually runs higher maintenance per mile, and lenders may price older trucks at higher rates or shorter terms. Compare total cost per mile: this calculator's payment per mile plus your expected maintenance cost per mile. A newer truck under warranty can beat an older truck with a small payment and big repair bills.
Free. Diesel & lane-rate moves, financing & tax deadlines, and new calculators — built for owner-operators watching every point of margin.
Compare a lease-purchase → Save your trucks & numbers with Pro →