Your car payment is costing you a bedroom. A $600/month car loan at today's rates costs you roughly $120,000 in home buying power. Should you pay it off before applying? Keep the cash for a down payment? Wait until it's almost paid off? Here's the math on all three.
At 6.4% on a 30-year fixed, every $200/month increase in your debt load reduces your maximum back-end DTI room by the same amount, which translates to roughly $40,000 less in mortgage capacity. Your car payment sits inside that calculation the same as any other debt. There's no special treatment for vehicles.
| Monthly car payment | Real-world car | Lost buying power |
|---|---|---|
| $0 | No car loan | - |
| $250/mo | Used Honda Accord | -$50,000 |
| $400/mo | New Toyota Camry | -$80,000 |
| $600/mo | New F-150 / Tesla Model 3 | -$120,000 |
| $800/mo | Luxury SUV / truck | -$160,000 |
| $1,000/mo | High-end truck / EV | -$200,000 |
Based on $90,000 gross income, 10% down payment, 6.4% 30-year fixed, 43% back-end DTI limit. Actual limits vary by lender and loan type.
See your exact home price with your car payment →The loophole
If your car loan has 10 or fewer monthly payments remaining at the time your lender pulls your credit, most lenders will exclude it from your DTI calculation entirely. The logic: the debt disappears early in the mortgage term and isn't a long-term strain on your budget. This applies to conventional, FHA, and VA loans.
This is the question most buyers with a car loan eventually face. You have $25,000 in savings. Your car loan balance is $22,000 at $520/month. Should you pay it off, or keep the cash for a down payment? The math almost always favors paying off the car. Here's why.
Eliminating the car payment removes the constraint from your monthly DTI limit.
A larger down payment reduces the loan size, but leaves the $520/mo debt intact.
Sometimes the right move is patience. Here's how to think about it.
If you're 12–18 months from paying off the car, waiting is often worth it. You'll qualify for $80–$150k more home with no strategic maneuvering needed. Home prices rising 3%/year in that window costs roughly $12–$18k on a $400k home which is less than the buying power you gain by eliminating the car payment.
In a flat or declining market, waiting 2–3 years might still make sense. In a market rising 4–6%/year, you could be priced out more than the car payment costs you. Model both scenarios against your specific market.
If payoff is 3+ years away and you can still qualify for the home you want, buy now. The 10-payment loophole, IDR strategy, or refinancing the car loan to a lower payment are all ways to reduce the impact without waiting.
Refinancing your car loan to a longer term reduces the monthly payment, which directly reduces your DTI without paying off the balance.
| Scenario | Monthly payment | DTI impact | Home price gain |
|---|---|---|---|
| Current loan: $18k, 36mo left | $540/mo | baseline | baseline |
| Refi to 60-month term | $340/mo | -3.3% DTI | +$40,000 |
Primary tool for this guide
Can I Afford a House With a Car Payment? Calculator
Enter your income, car payment, and down payment. See your exact max home price and what changes if you pay the car off.
If you have the cash, paying off the car delivers 4–5× more buying power than putting that same cash toward a down payment. The monthly payment elimination is what moves the needle, not the balance.
Check your payment count before doing anything. If your car has 10 or fewer payments remaining, your lender can exclude it entirely. Making a few extra payments to hit that threshold costs almost nothing and can unlock $80,000–$150,000 in additional buying power.
Leases always count, even with 2 payments left. If lease expiry is within 6 months, waiting may be worth it. If the car is financed, the 10-payment rule, early payoff, or refinancing all create real options.
Estimates based on your inputs. Actual results may vary. Terms →