Excel Home Buying & Mortgage Workbook Template | 15-Tab System | Affordability, Amortization, Rent vs Buy Calculator
Finally — a home buying spreadsheet that covers the entire journey, not just a mortgage calculator.
The Excel Home Buying & Mortgage Master Workbook is a 15-tab Excel system that takes you from "Can I afford this?" to "I own this home." Every tab feeds from a single Control Panel, so you enter your numbers once and the entire workbook updates automatically.
This is the spreadsheet I wish existed when I bought my first home.
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WHAT'S INCLUDED IN YOUR DOWNLOAD
✔ Clean Workbook (.xlsx) — Blank template, ready for your numbers
✔ Sample Data Workbook (.xlsx) — Pre-filled so you can explore every tab immediately
✔ Quick Start Guide (PDF) — Setup instructions, tab-by-tab reference, and tips
✔ License Agreement (PDF)
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15 TABS INSIDE
01 Read Me — Overview, color coding key, reset instructions
02 Beginner Guide — Plain-English walkthrough of every field and concept
03 Pro Guide — Advanced strategies for DTI optimization, rate analysis, and prepayment
04 Control Panel — Your command center. Enter income, home price, rate, and assumptions here
05 Affordability — DTI ratios, PITI breakdown, max affordable home price, cash-to-close
06 Rent vs. Buy — 5, 10, and 20-year comparison with appreciation, rent growth, and investment returns
07 Down Payment — Savings tracker with milestones at 3%, 5%, 10%, 15%, 20%, 25%
08 Mortgage Comparison — Compare 3 loan scenarios side by side
09 Amortization — Full 360-month schedule with automatic PMI drop-off at 20% equity
10 Extra Payments — See how extra monthly or annual payments save you thousands
11 Closing Costs — Estimate vs. Actual tracker for every line item
12 Home Scorer — Score up to 5 properties on 9 weighted criteria
13 First-Year Budget — Utilities, lawn care, furniture, maintenance — the costs renters never see
14 Maintenance Reserve — Every major system tracked with replacement cost and savings target
15 Net Worth Projector — 30-year equity growth vs. renting and investing
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WHY THIS IS DIFFERENT
Most home buying spreadsheets on Etsy are single-tab mortgage calculators. This is a complete 15-tab system with 3,240+ formulas that covers affordability, comparison shopping, closing costs, property scoring, first-year budgeting, and long-term wealth projection — all from one Control Panel.
→ 3,240+ formulas, all auto-calculated
→ Color-coded inputs (yellow = type here, blue = don't touch)
→ Protected formulas so you can't accidentally break anything
→ Built-in Beginner Guide AND Pro Guide
→ No macros, no VBA — works on any version of Excel
→ Works in Google Sheets too (some formatting may need minor adjustments)
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HOW IT WORKS
Open the Control Panel and enter your income, purchase price, down payment, and rate
Review the Affordability tab — see if the numbers work
Explore every other tab — they all update automatically
Use the Sample Data version to see how it looks filled in
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PERFECT FOR
First-time home buyers who want clarity before making the biggest purchase of their lives
Buyers comparing multiple properties or loan options
Anyone deciding whether to rent or buy
People who want to understand their mortgage, not just pay it
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SHEET PROTECTION
All formula cells are protected to prevent accidental overwrites. Input cells are unlocked and ready to use. If you need to unprotect: Review > Unprotect Sheet | Password: tynkr
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IMPORTANT
This workbook is an educational tool for financial planning and organization. It is not financial, legal, or tax advice. Consult a licensed professional before making financial decisions.
Digital download — all sales are final. If you experience a technical issue, contact us and we'll make it right.
Questions? Email tynkrtoolsco@gmail.com
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A TynkrTools&Co Product | A Built By Josh Company