How much house can we afford together?
Buying with friends, family, or a partner? This co-buying budget calculator shows exactly what you can afford together based on each person’s monthly contribution and cash to close. Built for 2–4 co-buyers, it factors in taxes, insurance, HOA, and live mortgage rates from the Federal Reserve (FRED)—so your results reflect today’s market.
Enter each person’s numbers, adjust Settings to change rates or costs, then calculate to see your group’s maximum purchase price, loan amount, down payment, and per-person monthly share. You’ll also get a PMI notice when applicable.
Use it to align fast, compare scenarios, and start your search with a realistic target.
Turn your co-buying budget into a real plan
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How this co-buying budget calculator works
Most mortgage calculators are built for a single buyer or married couple.
Ours is designed for 2–4 co-buyers — friends, family, partners, or any group buying together. It lets you combine different monthly contributions and upfront amounts to see a realistic budget that accounts for the true cost of ownership.
Step-by-step:
1. Select co-buyers: Choose 2–4 people.
2. Enter contributions: Add each person’s monthly budget and cash to close (down payment + closing costs).
3. Adjust settings: Change mortgage rate (live FRED default), closing cost %, property tax %, insurance %, and HOA/misc $/month.
4. Calculate: See your group’s maximum price, loan amount, down payment, PMI notice (when relevant), total monthly cost, and per-person share.
Why it’s different:
• Built for multiple buyers, not just one household
• Shows group totals and individual shares side-by-side
• Flags PMI when down payment is below common thresholds
• Factors in taxes, insurance, HOA, and other ownership costs
• Uses live mortgage rates from FRED for current market accuracy
Questions & answers
1. Select how many co-buyers, including you, plan to purchase a home together (two, three, or four).
2. For each co-buyer, enter monthly expenditure and cash to close. Monthly expenditure is the dollar amount each co-buyer will contribute every month towards mortgage repayments (principal + interest + taxes + insurance). Cash to close is the dollar amount each co-buyer will contribute up front to the home purchase to cover down payment plus closing costs.
3. You can adjust assumptions by clicking on Settings and making changes to the mortgage rate, closing costs, annual property taxes, and annual homeowners insurance (optional).
4. Click the Calculate our budget button to calculate your estimated budget for co-buying a home based on your inputs.
Co-buying is when two or more people who are not married to one another team up to buy and own a home together. Friends, family members, and couples co-buy homes.
Examples:
• Two friends
• An unmarried couple
• A mother and daughter
• Two married couples
• A multi-generational household
A co-buyer is anyone who participates financially in this kind of purchase.
Note: It's common for a friend or relative to participate as a non-occupant investor. This can take the form of a gift, loan, co-signing, or co-ownership.
It depends on many factors, including whether or not you require a mortgage to finance your home purchase.
Obtaining traditional financing through a residential mortgage lender becomes difficult with more than five co-borrowers on a mortgage.
No. Many mortgage products exist that allow borrowers to put less than 20% down towards a purchase. Some government loans allow for little to no down payment, but eligibility is borrower and case-specific.
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