Free · Works in FLYNT Sheets

Home Affordability Calculator Template

A real spreadsheet for walking a buyer through what a specific home price actually means in monthly terms, not a static rule-of-thumb. Enter the home price and down payment percentage and it calculates the down payment amount, loan amount, and estimated first-year interest — a simplified estimate, not full loan amortization, but enough to ground a real conversation in real numbers.

Home Price$400,000.00
Down Payment (20%)$80,000.00
Loan Amount$320,000.00
Annual Interest Rate6.5%
Est. Annual Interest, Year 1$20,800.00
Est. Monthly Interest, Year 1$1,733.33

Green rows calculate automatically from the values above them — change any number in FLYNT Sheets and they update.

Who it's for

Real estate agents who want a quick, adjustable answer when a buyer asks "what would this actually cost me" — during a showing, on a call, or before writing an offer.

Key features

  • Adjustable home price and down payment percentage
  • Down payment amount and loan amount calculated automatically
  • Adjustable annual interest rate
  • Estimated first-year annual and monthly interest calculated automatically
  • Exports to a real .xlsx file

How to use it

  1. Click "Use this template" to open it in FLYNT Sheets
  2. Enter the home price you're discussing with a buyer
  3. Adjust the down payment percentage to match their real plan
  4. Adjust the interest rate to current market rates
  5. Review the estimated monthly interest — enough for a real conversation, not a mortgage pre-approval

What's included

  • Home price, down payment percentage, and interest rate fields with example numbers
  • Down payment amount, loan amount, and first-year interest formulas already wired up

Common use cases

  • Answering "what can I afford" on the spot during a showing
  • Comparing two homes at different price points for the same buyer
  • Showing a buyer how a larger down payment changes their monthly numbers

Frequently asked questions

Is this a full mortgage calculator?
No — it's a simplified first-year interest estimate, not full amortization (principal paydown, PMI, taxes, and insurance aren't included). It's meant to ground a conversation in real numbers quickly, not replace a lender's pre-approval.
Can I adjust it for a buyer's specific loan terms?
Yes — it's a real spreadsheet. Change the interest rate, down payment, or extend the formulas for a more detailed calculation.
Is this free to use?
Yes, on FLYNT's free plan — no credit card required.