Tools
Mortgage Break-Even Calculator
Break-even means something different for a purchase, a refinance, and a rate buydown. Choose the mode that matches your question and the calculator uses the right model, the right inputs, and the right explanation — then compares the result against how long you actually expect to keep the loan or property.
Quick Answer
A break-even analysis compares an upfront cost against the ongoing savings it produces and identifies the month the two cross. It applies to refinancing (closing costs versus payment savings), to paying points (fee versus lower interest), and to buying versus renting (transaction costs versus ownership carrying cost). The answer is only meaningful alongside how long the borrower actually expects to hold the loan or the home.
Purchase Break-Even — model ownership month by month, including carrying costs, principal paydown, an appreciation assumption you control, and selling costs. Add a rent figure to turn it into a buy-vs-rent comparison.
How long do you expect to own this property?
Purchase and financing
$150,000
Ownership costs
$7,500 per year
Optional rent comparison
Estimated buy vs. rent break-even
4 yrs 4 mos
First month where the modeled cost of owning, after selling costs, falls below the modeled cost of renting.
At your expected holding period
- Expected holding period
- 5 yrs
- Estimated break-even
- 4 yrs 4 mos
Your expected holding period extends approximately 8 months beyond the modeled break-even point.
Monthly ownership picture
- Loan amount
- $600,000
- Principal & interest
- $3,792.41
- Taxes, insurance, HOA, MI, maintenance
- $1,462.50
- Total modeled monthly outlay
- $5,254.91
- Cash needed at closing
- $162,000
Value at 5 yrs
$869,456
Loan balance
$561,666
Estimated net sale proceeds
$246,928
Modeled difference vs. renting
$16,618
Want to Pressure-Test This Purchase?
Break-even depends on the loan structure as much as the price. Send Jonathan the scenario you modeled and get a read on the financing options behind it.
Prefer to talk? Call Jonathan at 210-993-5023
Modeled timeline
The navy marker is the modeled break-even point. The gold marker is the holding period you entered.
Modeled outcomes by holding period
Every figure is modeled from the assumptions you entered. Principal paid is not treated as a cost because it returns to you in the sale proceeds.
| Horizon | Est. property value | Est. loan balance | Est. equity | Est. selling costs | Est. net proceeds | Modeled cost of renting | Modeled cost of owning | Difference |
|---|---|---|---|---|---|---|---|---|
| 1 yr | $772,500 | $593,294 | $179,206 | $54,075 | $125,131 | $45,600 | $99,928 | -$54,328 |
| 3 yrs | $819,545 | $578,503 | $241,042 | $57,368 | $183,674 | $142,345 | $167,503 | -$25,158 |
| 5 yrs | $869,456 | $561,666 | $307,790 | $60,862 | $246,928 | $246,984 | $230,367 | $16,618 |
| 7 yrs | $922,405 | $542,497 | $379,908 | $64,568 | $315,340 | $360,162 | $288,073 | $72,089 |
| 10 yrs | $1,007,937 | $508,657 | $499,281 | $70,556 | $428,725 | $547,478 | $363,864 | $183,614 |
Assumptions used
- Property value grows at the annual appreciation rate you entered, compounded annually. Appreciation is an assumption, never a guarantee, and values can fall.
- Selling costs are applied to the modeled future sale price, not today's price.
- Principal paydown builds equity and is excluded from the cost side. Interest, taxes, insurance, HOA, mortgage insurance, maintenance, and closing costs are the non-recoverable costs.
- Mortgage insurance is modeled only while the down payment is below 20% and is not automatically removed as the balance falls.
- The rent comparison escalates rent once per year and does not model investment returns on the down payment a renter would keep.
- Taxes, insurance, HOA, and maintenance are held flat in nominal terms unless you change the inputs.
Results are estimates for educational purposes only and are based on the information and assumptions entered. They are not a loan approval, commitment to lend, or rate quote. Actual loan terms, payments, eligibility, taxes, insurance, and other costs may differ.
This tool does not predict future property values and does not tell you whether a purchase will be profitable. It models one set of assumptions you provided.
Cascada Mortgage Advisors, Inc. DBA HomeFlow (NMLS #2470941, CA DRE #02206556) is a licensed mortgage broker, not a direct lender. Any interest rate you enter is your own assumption, not a HomeFlow rate.
What this calculator does
It runs three separate models. Purchase Break-Even models ownership month by month, including principal paydown, interest, taxes, insurance, HOA, mortgage insurance, maintenance, an appreciation assumption you control, and the selling costs on a future sale; entering a comparable rent turns it into a buy-versus-rent comparison. Refinance Break-Even compares your existing loan against a proposed one, including whether closing costs are paid at closing or financed. Points & Rate Break-Even compares two rate and upfront-cost options on the same loan.
How each calculation works
Purchase mode does not divide closing costs by the monthly payment. It treats principal as equity rather than a cost and looks for the first month where modeled appreciation, net of selling costs, covers every non-recoverable dollar spent — or, with rent entered, where the modeled cost of owning falls below the modeled cost of renting. Refinance mode divides the closing costs by the modeled monthly payment reduction, then shows a time-horizon table that credits the difference in remaining principal so a restarted term is not mistaken for savings. Points mode divides the additional upfront cost by the modeled monthly payment savings.
Your expected holding period
Every mode asks how long you expect to keep the loan or property, then states plainly whether the modeled break-even happens before or after that point, and by how many months. That single comparison is usually more decisive than the break-even figure on its own. When no break-even occurs inside the modeled period, the calculator says so instead of showing an arbitrary number.
Important limitations
Appreciation, maintenance, rent growth, transaction costs, and interest rates materially affect the result, and all of them are assumptions you enter. This tool does not predict future property values, does not treat appreciation as guaranteed, and does not tell you a purchase is profitable because modeled equity grew. Equity is not investment return, and none of the modes account for taxes, the time value of money, or returns you might earn on cash spent at closing.