BHPH Debt-to-Income Calculator — Auto Finance Managers

If the DTI this calculator returns falls at or below 45%, take the result to your deal structure and run a soft-pull rate check — that ratio is workable for most subprime auto loan programs. Actual approval depends on your dealership's tier structure and the customer's full credit profile, not DTI alone.

What changes your DTI answer

• Gross income source. Verifiable W-2 income carries more weight than self-reported cash or 1099 deposits. If a customer can't document income, the usable figure — and the DTI — shifts.
• Existing obligation mix. High revolving balances, payday loans, or a second car payment all feed into total monthly debt. One deferred obligation can swing DTI by 5–8 points.
• Proposed payment amount. Dropping the payment $50/month on a $3,200-income customer reduces DTI by roughly 1.5 points — enough to clear a tier threshold.
• Term length. Stretching from 24 to 36 months on a typical BHPH note lowers the monthly payment and thus the DTI, but increases total interest paid and extends your portfolio exposure window.
• Down payment. A larger down payment reduces the financed amount, which lowers the monthly payment and the DTI simultaneously — and cuts default risk, making the deal stronger on both screens.

How to use this calculator

• Gross monthly income: Enter the customer's verified pre-tax monthly income. Use the figure you can document — pay stubs, bank statements, or employer verification.
• Existing monthly debt: Include all recurring obligations: rent or mortgage, other car payments, credit cards (minimum payments), personal loans, and child support. Exclude utilities.
• Proposed monthly payment: Enter the payment you're structuring for this deal. Run multiple scenarios — the calculator updates instantly.
• Reading the DTI output: Below 40% is clean for most bhph loan qualification criteria. 40–45% is borderline — look for compensating factors like a strong down payment or long tenure at employer. Above 50% is a hard stop at most in-house financing shops.
• Use it alongside your PTI screen. DTI measures total debt load; payment-to-income (PTI) isolates the new obligation. Both checks together give you a cleaner risk picture before you pull credit. See the affordability calculator if you need to run the PTI side of the equation separately.

Bottom line

For BHPH dealer financing, DTI is the first filter — not the final answer. Use this number to structure a payment your customer can carry, then verify income and run your full BHPH customer qualification checklist before committing the deal.