How much house can we afford together?
This calculator shows 2–4 co-buyers their combined purchasing power using live mortgage rates from the Federal Reserve (FRED).
Enter each person's monthly contribution and cash to close, then see your group's maximum price, loan amount, down payment, and per-person share.
Dialed your budget?
Now check alignment.
CoBuy Wizard helps your group surface risks and decide if co-buying makes sense—before you commit to anything.
Ready to structure your co-ownership?
Co-ownerOS™ Annual Pass includes your co-ownership agreement and governance tools. $500/year for your entire 2–4 person group.
How this co-buying budget calculator works
Most mortgage calculators are built for a single buyer or married couple.
This one 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
What to do after calculating your budget
1. Assess your group with CoBuy Wizard
Before you talk to lenders or agents, see if co-buying makes sense for your specific group. Wizard checks alignment on exit plans, usage, costs, and decision-making.
Start CoBuy Wizard →
2. Work with pros who understand co-buying
Most agents and lenders aren't trained for multi-party purchases. CoBuy-certified™ Pros know how to handle the complexity.
Learn about CoBuy-certified™ Pros →
3. Structure your co-ownership
Before you close, put agreements in writing. Co-ownerOS™ Annual Pass gives your group a custom co-ownership agreement and governance tools.
Check out Co-ownerOS™ →
Questions & answers
Select how many co-buyers (including you) plan to purchase a home together: two, three, or four. For each co-buyer, enter monthly contribution (the dollar amount each co-buyer can comfortably put toward housing each month) and cash to close (the total each can contribute upfront). Adjust settings for mortgage rate, closing costs, property tax, insurance, and HOA if needed. Click Calculate to see your group's maximum price, loan amount, down payment, PMI status, and per-person monthly share.
Co-buying is when two or more people who aren't married purchase a home together. This includes friends, relatives, unmarried couples, or any combination. Co-buyers can include a married couple as part of the group. Note: it's common for a buyer or co-buyer to participate as an "occupying co-signer" or contribute as a "non-occupying co-signer." This typically happens when a parent helps a child buy a home.
It depends on many factors, including whether or not you're using a mortgage to finance your home purchase. Obtaining traditional financing through a residential mortgage will typically limit how much of a loan you can get. Most lenders allow up to four co-borrowers on a mortgage.
No. Many mortgage products exist that allow between 3% and 20%+ down to co-buy a home. Some government loan programs allow for little to no down payment, but eligibility is borrower- and loan-specific.
Start with CoBuy Wizard to assess whether co-buying is a good fit for your specific group. Wizard surfaces alignment issues—like different exit timelines or usage expectations—that cause problems later. It's free during early access and takes about 10–15 minutes. Once you know co-buying makes sense, connect with CoBuy-certified™ Pros and use Co-ownerOS™ to structure your co-ownership before closing.