Purchase price and closing costs.
Start with the price you paid for the home. Then add your closing costs — typically 2% to 5% of the purchase price — because those came out of your pocket on day one and never come back. Title insurance, recording fees, appraisal, lender fees, and prepaid taxes all count.
Why it matters: closing costs are cash invested, just like your down payment. If you paid $400,000 for a home and spent $12,000 in closing costs, your real "cost basis" is $412,000 — not $400,000.
Down payment and financing.
How much cash you put down up front — versus how much you borrowed — changes the entire profit equation. A bigger down payment means less interest paid over the years, but also more cash tied up. If your down payment is under 20%, you're also paying PMI, which adds up fast.
Why it matters: the calculator models your full mortgage so you see exactly how much of each payment goes to principal vs interest. Over a 10-year hold, tens of thousands of dollars in interest are eating your "profit."
Holding period.
How long you own the home before selling is the single biggest lever on profit. Sell too early and closing costs plus commission will wipe you out. Hold long enough and appreciation plus equity build-up do the heavy lifting. Most homeowners need at least 3 to 5 years to break even.
Why it matters: because mortgage amortization is front-loaded with interest, your equity barely moves in the first few years. A 15-year mortgage builds equity much faster, but costs more per month.
Appreciation rate.
Home values historically grow about 3% to 5% per year in the US. Hot markets occasionally run higher; soft markets occasionally run flat or negative. Pick a rate that matches your local market reality, or run conservative and optimistic scenarios side by side.
Why it matters: a single percentage point of appreciation over a 10-year hold on a $400,000 home is about $46,000 in extra profit. This is where "when you sell" and "how long you held" turn into real money.
Annual carrying costs.
Every year of ownership costs real money: property taxes, homeowners insurance, HOA dues, maintenance, utilities, lawn care, pest control, the occasional big repair. Budget 2% to 4% of the home's value per year for maintenance alone, then add insurance and taxes on top.
Why it matters: carrying costs don't show up on your mortgage statement, but they add up to tens of thousands of dollars over a typical hold. Ignoring them is how sellers end up disappointed at closing — the "profit" they expected got eaten by 10 years of silent ownership costs.
Sale price projection.
Your projected sale price = purchase price × (1 + appreciation rate)^years held. On a $400,000 home at 4% annual appreciation over 7 years, that's about $526,000. But this is a gross number — you still owe the loan balance, commission, and closing costs before it becomes profit.
Why it matters: a lot of sellers confuse sale price with profit. The difference between the two — sometimes called "net proceeds" — is often 20% to 30% lower than the headline number.
Commission costs.
A traditional 6% listing commission on a $500,000 home is $30,000. That's the biggest single fee in most home sales — bigger than your mortgage payoff interest, bigger than your closing costs, sometimes bigger than your entire annual carrying cost budget. With a Beycome $99 flat-fee MLS listing, you pay just $99 plus any buyer-agent commission you choose to offer.
Why it matters: commission is the lever with the highest single-dollar impact on your profit. Cutting it from 6% to 2.5% (just the buyer-agent side) can add $15,000 to $40,000 to your net walk-away on a typical home sale. You can also negotiate seller concessions with the buyer to help cover their side of the deal.
The break-even year.
Putting all of this together: your break-even year is the first year in which sale price minus loan payoff minus commission minus cumulative carrying costs finally exceeds the cash you put in. That's the year your home stopped being an expense and started being an investment.
Why it matters: knowing your break-even year tells you when you can sell without losing money — and how much extra each additional year of holding really earns you. For most homeowners at normal appreciation rates, break-even lands somewhere between year 3 and year 5. After that, every year matters.
