Property Decision Desk

Mortgage Mechanics

Rate Shock Meter

Measure how a rate move changes your payment and total interest.

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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

Use Rate Shock Meter when you want to see what the loan fine print does to your money in plain numbers. Measure how a rate move changes your payment and total interest.

It is free, runs entirely client-side, and is built for quick what-if loops: change one input, rerun, compare.

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 Rate Shock Meter

What is Rate Shock Meter for?

Measure how a rate move changes your payment and total interest. It focuses on what the loan fine print does to your money, so you can compare realistic paths instead of a single optimistic listing photo.

How do I use Rate Shock Meter?

Fill in realistic values for your situation and run it. The output shows the key figures side by side, so rerun with different assumptions to stress-test the result.

Is Rate Shock Meter free?

Yes. Rate Shock Meter is free, needs no account, and runs entirely in your browser — your inputs are never uploaded.

Is this financial or real estate advice?

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