Property Decision Desk

Affordability & Qualifying

DTI Guardrail

Front-end and back-end ratios against common underwriting bands.

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Educational estimate only. Not financial, tax, lending, or real-estate advice. Markets, taxes, and local conditions vary.

How to read this decision

Most calculators stop at the monthly payment. DTI Guardrail focuses on what you can carry without becoming house-poor. Front-end and back-end ratios against common underwriting bands.

Everything runs in your browser — no account, no data sent anywhere — and results update as soon as you press the button.

Methodology & next steps

This tool runs entirely in your browser. Change one input at a time, compare scenarios, and export the report before you talk to an agent or lender.

  1. Start with realistic income, price, rate, and cost assumptions for your market.
  2. Use presets or Snapshot as B to stress-test a second path.
  3. Read the verdict, charts, and schedule — then verify taxes, insurance, and comps locally.
  • Copy report or Print / PDF for a shareable decision page.
  • Save scenarios on this device or copy the share link in the address bar.
  • Export CSV/JSON when you want numbers in a spreadsheet.

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About DTI Guardrail

What question does DTI Guardrail answer?

Front-end and back-end ratios against common underwriting bands. It focuses on what you can carry without becoming house-poor, so you can compare realistic paths instead of a single optimistic listing photo.

How does DTI Guardrail work?

Enter your own numbers in the fields, press the button, and compare the paths shown. Adjust one assumption at a time to see which input moves the result most.

Is DTI Guardrail free?

Yes. DTI Guardrail is free, needs no account, and runs entirely in your browser — your inputs are never uploaded.

Is this financial or real estate advice?

No. DTI Guardrail produces educational estimates only. Markets, taxes, lending rules, and local conditions vary, so confirm big decisions with a qualified professional.