When shopping for a mortgage, comparing lenders on total cost — not just monthly payment — leads to better decisions. This free Google Sheets worksheet makes it easy.
Mortgage Loan Comparison Worksheet
3 tabs: Loan Comparison · Affordability Notes · Instructions · Free
Downloads as .xlsx — open in Excel or upload to Google Sheets via File → Import
Heads up — manual setup required.Download the worksheet first, then get quotes from at least 3 lenders and enter the numbers by hand. The worksheet doesn't connect to the calculator automatically.
Download the worksheet
Click "Download Free Worksheet" above. The .xlsx file saves to your device. Open in Excel, or upload to Google Sheets via File → Import.
Get quotes from at least 3 lenders
Apply within a 14–45 day window — multiple mortgage inquiries count as one hard inquiry under FICO rules. Request a formal Loan Estimate from each lender.
Fill in the Loan Comparison tab
Enter lender name, rate, APR, down payment, taxes, insurance, and PMI for each offer. Total monthly payment, total cost and break-even calculate automatically.
Check affordability on tab 2
Enter your gross income. The sheet calculates your 28% front-end and 36% back-end DTI thresholds and flags whether your best offer is within range.
Most buyers compare monthly payments and pick the lowest. That's often the wrong move. Here's what actually determines the best loan:
Tab 1 — Loan Comparison
Tab 2 — Affordability Notes
Not sure what to enter? These examples use a $400,000 purchase and show why the cheapest monthly payment is not always the cheapest loan.
| Scenario | Loan A | Loan B | What to look at |
|---|---|---|---|
| Down payment | Conventional, 5% down | FHA, 3.5% down | PMI cancels at 80% LTV; FHA MIP usually lasts the life of the loan |
| Loan term | 30-year fixed | 15-year fixed | Higher payment, much lower total interest |
| Two lenders | 6.50%, $4,500 fees | 6.25%, $9,000 fees | Break-even month: extra fees ÷ monthly savings |
Related tools: compare up to 6 loans online, 15 vs 30 year calculator, ARM vs fixed calculator, refinance break-even calculator, closing costs calculator and DTI calculator.
Use the mortgage calculator to estimate your monthly payment at different rates and loan amounts — then enter those numbers into the worksheet to see which lender wins on total cost.
Use the Mortgage Calculator →These lenders offer fast online pre-qualification with no hard credit pull — so you can fill out the worksheet with real numbers before you commit to anything.
Compare lenders side by side →FAQ