Property & Real Estate Calculators
Free tools for buying, renting, selling and investing in property
Run the numbers on any property decision in minutes. Compare renting against buying, estimate property tax, size up a rental deal by cap rate and cash-on-cash return, work out what you’ll net from a sale, and plan the tax side of selling or exchanging real estate — every calculator shows its formula and assumptions.
Last reviewed: October 21, 2026
Showing all 24 calculators
What is a real estate calculator? A real estate calculator turns property numbers — price, rent, expenses, loan terms and tax rates — into decision metrics such as monthly cost, cap rate, cash-on-cash return, net sale proceeds or tax owed. Homebuyers use them to compare renting with buying and estimate property tax; landlords use them to price rent; investors use them to screen rental, BRRRR and flip deals before making an offer.
Buying, Selling & Ownership Costs
For homeowners and buyers: the true cost of owning, what a sale really nets, and the tax bill that comes with it.
Rent vs Buy Calculator
Compare the full cost of renting against buying over your planned stay — mortgage, upkeep, appreciation and the investment return on your down payment — and find your break-even year.
Property Tax Calculator
Estimate annual and monthly property tax from assessed value, assessment ratio, millage rate and homestead exemptions — the figure lenders add to your escrow payment.
Real Estate Commission Calculator
Work out total realtor commission, the listing and buyer-agent split, and what each agent keeps after the brokerage split — useful for sellers negotiating fees and agents forecasting income.
Seller Net Proceeds Calculator
A seller net sheet in your browser: subtract mortgage payoff, commission, closing costs, transfer tax and concessions from the sale price to see the cash you walk away with.
Real Estate Capital Gains Tax Calculator
Estimate capital gains tax on the sale of a home or investment property, including adjusted cost basis, the Section 121 home-sale exclusion, and long-term versus short-term rates.
Rent Calculators for Tenants & Landlords
Everyday rent math — what you can afford, what a partial month costs, and how much a rent increase really is.
Rent Affordability Calculator
Find how much rent you can afford from your income and debts using the 30% rule, the landlord “40× rent” income test, and a realistic budget-based limit.
Prorated Rent Calculator
Calculate partial-month rent for a move-in or move-out date using the actual days in the month, a 365-day year or the banker’s 360-day method — then compare all three.
Rent Increase Calculator
Turn a rent change into a percentage (or a percentage into new rent), check it against a local rent cap, and project rent growth over several lease renewals.
Rental Property & Investment Analysis
The metrics investors and lenders use to screen and underwrite income property — start with the Rental Property Calculator for a full deal view.
Rental Property Calculator
Complete rental deal analysis: monthly cash flow, NOI, cap rate, cash-on-cash return, DSCR and the 1% rule from one set of inputs, plus a multi-year return projection.
Cap Rate Calculator
Calculate capitalization rate from NOI and price, or reverse it to value a property at a target cap rate — the financing-neutral way to compare income properties.
Cash-on-Cash Return Calculator
Measure your annual pre-tax cash flow against the cash you actually put in — down payment, closing costs and repairs — to see the leveraged return on a financed rental.
NOI Calculator
Work out net operating income: gross rent minus vacancy and every operating expense, with mortgage payments correctly left out — the number behind cap rate and DSCR.
Rental Yield Calculator
Calculate gross and net rental yield on a buy-to-let or rental home in any currency — the headline return metric used by landlords in the UK, Canada and Australia.
DSCR Calculator
Check whether a rental qualifies for a DSCR loan: debt service coverage ratio, the minimum rent needed for 1.0× and 1.25×, and the largest loan the rent can support.
Investing Strategies & Real Estate Tax
Model value-add plays and the tax rules that decide what you keep when you sell or swap a property.
BRRRR Calculator
Model Buy, Rehab, Rent, Refinance, Repeat: all-in cost, cash-out refinance at ARV, cash left in the deal and post-refinance cash flow and DSCR.
House Flip Calculator
Find a fix-and-flip’s maximum offer with the 70% rule, then project profit and ROI after rehab, holding, financing and selling costs.
1031 Exchange Calculator
Estimate the tax deferred by a like-kind exchange, any taxable boot, the replacement value and debt you need, and your 45-day and 180-day deadlines.
Depreciation Recapture Calculator
See how much depreciation you claimed on a rental (27.5-year schedule) and the recapture tax due on sale under the unrecaptured Section 1250 rules.
Home Equity & Home Loans
Know what your home is worth to you on paper, what borrowing against it would cost, and what a mobile or manufactured home loan would really cost each month.
Home Equity Loan Calculator
Calculate your home equity, loan-to-value ratio and how much you could borrow with a home equity loan at common 80%–85% combined LTV limits, with the monthly payment.
HELOC Calculator
Estimate home equity line of credit payments in the interest-only draw period and the jump when repayment begins, so the payment change doesn’t catch you off guard.
Mobile Home Loan Calculator
Estimate the monthly payment on a mobile or manufactured home — chattel (home-only) loan or land-and-home financing — including down payment, lot rent, insurance and total interest over the term.
Land, Space & Construction
Measure a home or lot accurately and estimate what it would cost to build — figures that drive price per square foot and appraisals.
Square Footage Calculator
Add up square footage room by room — rectangles, L-shapes, circles and triangles — and get price per square foot for a listing or rental in the same view.
Acreage Calculator
Convert lot dimensions or square footage to acres, hectares and square meters — handy for comparing land listings, zoning minimums and price per acre.
Cost to Build a House Calculator
Estimate construction cost from size, finish level and local cost per square foot, plus land, site work, permits and a contingency — then compare building with buying.
No calculator matches that search yet. Try a broader term such as “rent”, “tax” or “rental”.
Which Property Calculator Do You Need?
Start from the decision in front of you, not the formula. This table maps the most common property questions to the right tool and the number it gives you.
| Your question | Use this calculator | The number you get |
|---|---|---|
| Should I keep renting or buy a home? | Rent vs Buy | Break-even year and net-worth gap |
| How much will property tax add to my payment? | Property Tax | Annual and monthly tax |
| How much rent can I afford on my salary? | Rent Affordability | Comfortable and maximum rent |
| Is this rental a good deal? | Rental Property | Cash flow, cap rate, CoC, DSCR |
| Will a lender approve a DSCR loan on it? | DSCR | DSCR and minimum qualifying rent |
| What will I walk away with if I sell? | Seller Net Proceeds | Cash at closing |
| Will I owe tax when I sell? | Capital Gains Tax | Taxable gain after exclusion |
| How much can I borrow against my home? | Home Equity Loan | Equity, LTV and borrowing limit |
| Should I take a flexible line of credit instead? | HELOC | Draw and repayment payments |
| Will this fix-and-flip make money? | House Flip | Net profit, ROI and max offer |
| Can I recycle my cash into the next rental? | BRRRR | Cash left in the deal after refinance |
| How much will it cost to build a house? | Cost to Build a House | Budget by state, city or UK route |
| What would a manufactured home cost per month? | Mobile Home Loan | Chattel vs land-home payments |
| How big is my home or room? | Square Footage | Living area, m² and a floor plan |
Key Real Estate Formulas at a Glance
Every calculator in this hub is built on a handful of standard formulas. Knowing them lets you sanity-check any listing in your head before you open a tool.
| Metric | Formula | Common rule of thumb |
|---|---|---|
| Net operating income (NOI) | Gross rent − vacancy − operating expenses | Excludes mortgage payments and depreciation |
| Cap rate | NOI ÷ property value × 100 | Lower in high-demand cities, higher in smaller or riskier markets |
| Cash-on-cash return | Annual pre-tax cash flow ÷ total cash invested × 100 | Many investors target roughly 8%–12% |
| DSCR | NOI ÷ annual debt service | Lenders commonly look for 1.20–1.25 or higher |
| Gross rent multiplier | Price ÷ gross annual rent | Lower GRM = cheaper relative to income |
| Gross rental yield | Annual rent ÷ price × 100 | Net yield subtracts running costs first |
| 1% rule | Monthly rent ≥ 1% of purchase price | A quick screen, not an underwriting standard |
| 70% rule (flips) | Max offer = ARV × 0.70 − repair costs | Leaves room for holding, selling costs and profit |
| Home equity | Market value − all loan balances | Lenders often cap combined LTV near 80%–85% |
Rules of thumb are screening shortcuts that vary by market, property type and interest-rate environment. Use them to shortlist deals, then run the full calculator.
How to Get Accurate Results From a Property Calculator
Calculators are only as good as their inputs. These four habits close most of the gap between an online estimate and what actually happens at closing or at tax time.
- Use real local numbersPull the actual tax rate from your county assessor, insurance quotes, and rent comps — not national averages.
- Budget for the unglamorous costsInclude vacancy, repairs, capital expenditures, management and closing costs; leaving them out flatters every return metric.
- Stress-test the dealRerun it with a higher rate, lower rent and longer vacancy. A deal that only works in the best case isn’t a deal.
- Confirm tax questionsUse the tax calculators to size the issue, then confirm exclusions, exchanges and recapture with a CPA or enrolled agent.
Financing a Property? Pair These With Our Mortgage Tools
Property decisions almost always involve a loan, so these hubs pick up where this one stops.
Property & Real Estate Calculator FAQs
There is no single “good” cap rate — it depends on location, property class and interest rates. Prime urban properties often trade at lower cap rates because they are seen as safer, while smaller or riskier markets offer higher cap rates to compensate. Compare a property’s cap rate with similar recent sales in the same area rather than with a national figure.
Cap rate divides NOI by the property’s value and ignores financing, so it compares properties on equal footing. Cash-on-cash return divides your annual cash flow after the mortgage by the cash you actually invested, so it reflects your leverage. A property with an average cap rate can still deliver a strong cash-on-cash return if it is financed well — or a weak one if rates are high.
Most US jurisdictions multiply the assessed (taxable) value of a property by the local tax rate, often expressed as a millage rate — $1 of tax per $1,000 of assessed value per mill. Exemptions such as a homestead exemption reduce the assessed value first. Because rates and assessment rules are set locally, check your county assessor’s figures for an exact bill.
A common guideline is to keep rent near 30% of gross monthly income, and many landlords require gross income of about 40 times the monthly rent. Those rules ignore debt payments and local costs, so a budget-based calculation that subtracts your other obligations gives a more realistic ceiling.
Buying tends to win the longer you stay, because upfront and selling costs are spread over more years while equity builds. Renting can win over short stays, in high price-to-rent markets, or when your down payment would earn more invested elsewhere. A rent vs buy calculator finds the break-even year for your specific numbers.
If you owned and lived in the home as your main residence for at least two of the five years before the sale, IRS Publication 523 lets you exclude up to $250,000 of gain ($500,000 for most married couples filing jointly). Gain above the exclusion, and gain on investment property, is generally taxable at capital gains rates.
A 1031 like-kind exchange lets an investor defer capital gains tax by reinvesting sale proceeds from business or investment real estate into another qualifying property. You must identify replacement property within 45 days and close within 180 days, and any cash or debt reduction you receive (“boot”) is taxable.
Many DSCR lenders look for a ratio of roughly 1.20 to 1.25, meaning rental income covers the debt payment with a 20%–25% cushion. Some lenders will go to 1.0 or slightly below with a larger down payment or a higher rate. A DSCR calculator shows the minimum rent that hits each threshold.
Divide monthly rent by the number of days in that month to get a daily rate, then multiply by the days you occupy the unit. Some leases use a 365-day year (monthly rent × 12 ÷ 365) or a 30-day banker’s month instead, which produces slightly different amounts — your lease decides which method applies.
Under IRS Publication 527, residential rental buildings are depreciated over 27.5 years using the straight-line method; land is never depreciated. When you sell, the depreciation you claimed (or could have claimed) is generally subject to recapture tax, which is what the depreciation recapture calculator estimates.
Yes. Every calculator on DexoCalc is free, runs in your browser and needs no account. Your inputs are not sent to us or stored, so you can model private numbers such as income, loan balances and sale prices safely.
The math is exact; the uncertainty lives in the inputs. Estimates for rent, vacancy, repairs, appreciation and tax rates drive most of the difference between a calculator’s answer and reality. Use local data, run a pessimistic scenario, and treat results as planning estimates rather than tax, legal or lending advice.
Manzoor Ahmad
13+ years of web development & SEO experience · Founder, DexoCalc
Manzoor builds and maintains every DexoCalc calculator, including the full mortgage and finance calculator libraries. Each property tool on this page is built on published formulas and official guidance, with its assumptions listed on the page so you can check the math yourself.
Sources & references
DexoCalc property and real estate calculators provide estimates for education and planning. They are not tax, legal, appraisal or lending advice. Tax rules, rates and lender requirements change — confirm decisions with a licensed professional.
