Rent-to-Own Calculator

Rent-to-own gets pitched as a way into a home when a mortgage is out of reach today. The reality is more of a tradeoff than a shortcut. You pay an upfront fee and an above-market rent to lock in a price and build a credit toward buying, and if you do not buy by the option date, most of that money is gone. This calculator lays out both sides: what you build, and what you stand to lose. Every term is negotiated, so replace the defaults with the numbers in your own contract.

The agreement

Agreed purchase price

Option fee

Lease term

months

An option fee of $9,600 at signing. It buys the right to purchase, not the obligation, and is usually non-refundable if you walk away.

Rent, credits, and the alternative

Monthly rent

Monthly rent credit

Market rent for the same home

If invested instead, return

Option fee credited at closing

Many contracts apply the option fee to the price when you buy. Turn this off if yours does not.

Your results

At risk if you don't buy

$16,800

Credit toward purchase

$16,800

Option fee

$9,600

Left to finance at closing

$303,200

The part that is easy to miss

A lease-option is a right to buy, not a promise. If you cannot buy by the option date, you typically forfeit the option fee and every rent credit: $16,800 in this scenario. That is the real cost of the bet if it does not pay off, and those credits only become real money once the purchase closes.

The rent premium is what the option costs you

Rent above market

$300/mo

Premium over the lease

$10,800

You pay $300 a month above market rent but get only $200 back as credit. Over the lease you hand over more in premium than you build in credit, and that gap is the price of locking in, whether or not you end up buying.

The other path: rent at market and invest the difference

If instead you rented the same home at market rate and invested the option fee ($9,600) plus the $300 monthly premium at a 4.0% return, here is what you would have by the option date, set against the credit you would build inside the agreement.

Credit built inside the deal

$16,800

If you rented and invested

$22,276

Renting at market and investing the difference ends higher, at $22,276 versus $16,800, and that money stays liquid instead of being tied to buying this one home.

These are not the same kind of money. The credit only counts if you buy this specific home at the agreed price; the invested savings are yours either way. Weigh the certainty of a locked price against the flexibility of cash you can walk with.

Every number here is negotiated in your contract, not set by any standard, and there is no national dataset on rent-to-own terms. Treat these defaults as starting points and replace each one with the actual terms of your agreement.

This calculator models a standard rent-to-own arrangement, the lease-option, and reports what it costs and what you stand to lose. There is no single industry-standard rent-to-own contract, so treat every input here as a starting point you replace with the terms of your own agreement. The option fee, the rent credit, the lease length, and whether the fee is applied at closing are all negotiated, and there is no national dataset that fixes them. The structure is this. You pay an upfront option fee, a share of the purchase price, for the right to buy the home at a price agreed today. Over a fixed lease you pay a monthly rent, and a stated portion of each month's rent, the rent credit, is earmarked toward the purchase. At the option date you can buy at the agreed price, applying your accumulated credits and, if the contract says so, the option fee, to what you owe. Or you can walk away. The number to keep in front of you is what you forfeit if you do not buy. A lease-option is a right, not an obligation, so if you cannot buy by the option date, you typically lose the option fee and every rent credit. Those credits are only real money once the purchase closes. We report that exposure first, not as a footnote, because it is the downside that makes rent-to-own a bet rather than a sure path to ownership. The rent premium is the real price of the option. We compare your monthly rent to what the same home would rent for on a straight lease. The difference is the premium, and over the lease it can add up to more than the credits you build. When that happens, you are paying more above market than you are getting back, and the extra is the cost of locking in the price. To put that cost in context, we also show the alternative: renting the same home at market rate and investing the option fee plus the monthly premium at a return you set. That gives you a liquid figure to weigh against the credit you would build inside the agreement. It answers whether locking in was worth it as a number, though the two are different kinds of money. The credit only counts if you buy, while the invested savings are yours either way. What this leaves out: the mortgage you would take on the purchase, closing costs, and any property taxes, insurance, or maintenance you might cover during the lease, which vary by contract. It also does not predict where the market will go, so it cannot tell you whether the price you locked in will look like a bargain or a mistake at the option date.

Related reading: First-Time Homebuyer Guide

Frequently Asked Questions

In a lease-option, the most common form, you pay an upfront option fee for the right to buy a home at a price set today. You then rent for a fixed term, and part of each month's rent is credited toward the purchase. At the end you can buy at the agreed price, using your credits and often the option fee toward what you owe, or walk away. The terms are all negotiated, so no two contracts are quite alike.

You typically forfeit the option fee and every rent credit you built. That is the heart of the tradeoff: a lease-option is a right to buy, not an obligation, and the money earmarked toward the purchase is only real if the purchase closes. In the default scenario here, that is $16,800 at risk. That is why the amount at risk is worth looking at before you sign, alongside how likely you are to qualify for a mortgage by the option date.

It depends entirely on your situation and the terms, and this tool does not push you either way. Rent-to-own can make sense if you are confident you will buy and a lease-option lets you lock in a price while you prepare. It works against you if you are unsure, because the premium rent and forfeited credits can cost more than simply renting and saving. Run your own contract's numbers and compare the amount at risk to the alternative of renting and investing the difference.

It is an upfront payment for the right, but not the obligation, to buy the home at the agreed price. It is often 1% to 5% of the price, though that is negotiated and not a fixed rate. Most contracts make it non-refundable, and many apply it toward the purchase if you buy. If you do not buy, you usually lose it.

Only if you complete the purchase. A rent credit is a portion of each month's rent your contract earmarks toward the price, so at closing it reduces what you still need to finance. Until then it is a promise, not cash in hand. And because the rent that carries the credit is usually above market, you are often paying a premium to build a credit you only collect if you buy.

The rent is usually higher. A lease-option typically charges above-market rent, and the gap is the premium you pay for the option to buy and for the credit toward the price. A straight rental has no option fee, no premium, and no credit, but also no locked-in price. This calculator shows the premium as its own number so you can see what the option is costing you each month.

There is no reliable national figure, because these are negotiated contract by contract and no government dataset tracks them. You will see ranges quoted online, but treat them as rough starting points, not statistics. The defaults in this calculator are illustrative, not benchmarks. The only numbers that matter are the ones written into your agreement, so use those.

Math methodology last reviewed by Barron Hansen on July 15, 2026

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Should I Rent or Buy?

The full decision, beyond any single path to a home

The other path: rent at market and invest the difference

Credit built inside the deal

$16,800

If you rented and invested

$22,276

Renting at market and investing the difference ends higher, at $22,276 versus $16,800, and that money stays liquid instead of being tied to buying this one home.