Buy Sell Mortgage Calculator
Current Home Value $ Current Mortgage Balance $ New Home Price $ Selling Costs (% of sale price) New Home Down Payment (%) New Mortgage Interest Rate (%) New Loan Term (Years) Current Monthly Payment $ Moving & Transition Costs $ New Home Closing Costs $ Bridge Loan Required NoYes Calculate Reset Buy/Sell Analysis Results…
Selling your current home while buying a new one is exciting—but also financially complex. Between mortgage payoffs, real estate fees, closing costs, and down payments, it can be difficult to figure out exactly how much money you’ll need or walk away with.
That’s where a Buy Sell Mortgage Calculator comes in. This tool helps you compare your home sale proceeds against the purchase cost of your new property, so you can see whether you’ll have enough equity for your next down payment—or if you’ll need extra financing.
What Is a Buy Sell Mortgage Calculator?
A Buy Sell Mortgage Calculator is designed for homeowners who are transitioning between properties. It gives you a full financial picture by factoring in:
- Your current home’s sale price
- Remaining mortgage balance
- Real estate agent commission
- Closing costs and selling fees
- Down payment needed for the new property
- New mortgage loan details
The result? A clear estimate of how much equity you’ll carry over and how much you’ll need to finance your new purchase.
How to Use the Buy Sell Mortgage Calculator
Here’s a step-by-step guide:
1. Enter Your Current Home’s Sale Price
Use a market estimate or realtor’s valuation.
2. Input Your Remaining Mortgage Balance
This is the amount you still owe your lender.
3. Add Selling Costs
Include real estate commission (5–6%) and closing fees (1–3%).
4. Enter the Price of the New Home You Plan to Buy
This gives you a baseline for affordability.
5. Add Your Desired Down Payment
Decide how much of your sale proceeds you want to put toward the new purchase.
6. Enter Loan Details for the New Mortgage
Include interest rate and term (15, 20, or 30 years).
7. Click Calculate
The tool will show you:
- Net proceeds from your home sale
- Equity available for your new down payment
- Estimated new monthly mortgage payment
- Any additional funds required
Practical Example: Buying and Selling at the Same Time
Imagine this scenario:
- Sale Price of Current Home: $450,000
- Remaining Mortgage Balance: $220,000
- Agent Commission (5%): $22,500
- Closing Costs (2%): $9,000
Net Proceeds from Sale = $198,500
Now, you want to buy a new home for $500,000. You decide to use $150,000 from your proceeds as a down payment.
- New Loan Amount: $350,000
- Interest Rate: 6%
- Loan Term: 30 years
The calculator shows your monthly mortgage payment of about $2,098, leaving you with $48,500 in leftover equity after the purchase.
Benefits of Using a Buy Sell Mortgage Calculator
✔ Plan Ahead – Know exactly how much equity you’ll carry into your next purchase.
✔ Avoid Surprises – Factor in commissions, fees, and closing costs.
✔ Budget Smarter – See if you’ll have leftover cash or need extra financing.
✔ Compare Scenarios – Test different home prices, loan terms, and down payments.
✔ Confidence in Moving – Make better decisions before listing or buying.
Tips for Buying and Selling at the Same Time
- Get a mortgage pre-approval before house-hunting.
- Always request an official payoff statement from your lender.
- Consider bridge loans or home equity loans if timing is tight.
- Account for moving expenses and possible temporary housing.
- Be realistic with home values—use conservative estimates.
FAQ: Buy Sell Mortgage Calculator
Here are 20 common questions and answers:
1. What is a Buy Sell Mortgage Calculator?
It’s a tool that shows how much equity you’ll have when selling a home and buying a new one.
2. Can I use this if I still owe on my mortgage?
Yes—the tool subtracts your mortgage balance from your sale price.
3. How do I calculate net proceeds from selling my home?
Subtract your mortgage balance and selling costs from the sale price.
4. What if I sell for less than I owe?
You’ll be underwater and may need to cover the difference.
5. Does the calculator include agent commissions?
Yes, you can add commissions (usually 5–6%).
6. Do I need to include closing costs?
Yes, these are typically 1–3% of the sale price.
7. How much down payment should I plan for the new home?
Ideally 20%, but the calculator lets you test different amounts.
8. Can this calculator estimate new mortgage payments?
Yes, it uses loan amount, rate, and term.
9. What if I want to buy a home before I sell mine?
You may need a bridge loan or temporary financing.
10. Will this calculator show leftover cash?
Yes, it shows net proceeds minus down payment.
11. Can I use this for investment property?
Yes, it works for both residential and rental homes.
12. Does my credit score affect the results?
Not the calculator, but it affects your loan approval and interest rate.
13. Can I avoid paying agent fees?
If you sell by owner, you may reduce or skip commission.
14. What if my new home costs less than my current one?
You could buy with cash or have a smaller new mortgage.
15. Can I roll my equity into the next home?
Yes, your sale proceeds often go directly toward your new down payment.
16. How does a bridge loan work?
It’s short-term financing to cover the gap between buying and selling.
17. Can I calculate taxes on the sale?
You can add them manually, especially if capital gains apply.
18. What if I still have a second mortgage or HELOC?
Those balances must also be paid off from sale proceeds.
19. Should I use conservative numbers?
Yes—overestimating sale price or underestimating costs can hurt planning.
20. When should I use this calculator?
Before listing your home and before making an offer on your next property.
Final Thoughts
A Buy Sell Mortgage Calculator is the perfect tool for homeowners making the move from one property to another. By estimating your sale proceeds, mortgage payoff, and new purchase costs, it helps you plan your next step with confidence.