How to control your rate of return

Can you control your rate of return?

Yes, when you write the deal. A rate of return is what your money earns as a percentage of what you put in, over time. It comes from just three things: what you pay out, what you get back, and when. In a stock or a fund, the market decides the second and third. In a deal where you set the terms, such as selling something on owner financing and carrying the note, you decide all three.

That gives you four levers:

• Price: what you pay for the thing, and what you sell it for.
• Cash at risk: how much of your own money is tied up. The buyer’s down payment shrinks it.
• Term: how many months the buyer takes to pay, which sets how fast your cash comes back.
• Rate: the interest on the note.

Most people reach for the rate first. It is the weakest of the four. The rest of this page shows why with one deal, changed one lever at a time, and then covers what the percentage hides: dollars, speed, scale and the buyer who stops paying.

How do you measure a deal’s return?

With four numbers, never one. Every example on this page reports all four:

1. Profit: all the cash in, minus all the cash out, in dollars.
2. Cash at risk: the most you are ever out of pocket.
3. Payback month: the month your cash is all back.
4. Yield: the percentage, measured as the internal rate of return (IRR), the rate at which everything you get back, discounted month by month, exactly equals what you put in.

A monthly yield is then quoted one of two ways, and the gap between them gets large at high rates:

In Excel or Google Sheets

IRR in a spreadsheet needs at least one negative and one positive value, evenly spaced in time, and returns a rate per period: here, per month. Multiply by 12 or use EFFECT before comparing it with a yearly rate.

Deal levers calculator

Put in your own deal. The calculator shows its return, profit, cash at risk and payback month, then changes one lever at a time so you can see which ones matter. Price changes step by about a quarter of your cost, rounded to $500: $1,000 with the starting numbers, the same steps as the table below.

Which lever moves your return the most?

The price you pay and the down payment you take, because they change the cash at risk, which is what the percentage is divided by. The rate moves the return least. Here is the same deal with one thing changed at a time:

Why the price beats the rate

Buying for $1,000 less does three things at once: it adds $1,000 of profit, halves the cash at risk, and brings your cash back five months sooner. Raising the rate five points does one: it adds interest, a little each month for three years.

Take the down payment lever to its end and something odd happens. With $3,500 down, the buyer’s down payment covers your whole cost. Nothing of yours is at risk, so the percentage has no finite value at all (“not meaningful” in the calculator), and the profit is $4,992. That is the clearest sign that the percentage measures the size of your stake, not the quality of the deal.

IRR vs dollars: which return should you chase?

Dollars, measured at what your money could otherwise earn. The percentage rewards speed and small stakes; your bank balance rewards profit. The term lever shows the two pulling apart.

To pick between them, bring each month’s cash back to today at the yearly rate your money could earn instead, the same net present value (NPV) used for any decision. Here is the value today of each version of the deal, after subtracting the $2,000 at risk:

If the cash coming back would sit in savings or an index fund, the long note is worth more today. Only if you could put every returning dollar to work at 20% a year or better does the short note win. Either way, the bigger percentage does not decide it.

Velocity: what happens to the payments?

Velocity means putting returned cash straight back to work. A compounded yield quietly assumes it: the example deal’s compounded figure describes $2,000 growing only if every $207.99 is reinvested, the month it arrives, at that same rate. Few people can do that.

To get closer to the big figure you need the next deal ready when the cash is. If every payment went into identical deals, a second could start in month 10, a third in month 15 and a fourth in month 18. That only happens if you can find, fix and sell a home that fast, and each one is another buyer who might stop paying. Velocity is real, but it is a pace of work, not a property of the note.

Why a high return on small cash does not scale

Because the percentage is high only while the stake is small. $5,488 over three years is about $1,829 a year. To earn $30,000 a year this way you would need about 16 such notes paying at once, which means buying, fixing, selling and collecting on five or six homes every year.

Compare what the same money does elsewhere:

• $2,000 earning 10% a year in stocks for 3 years makes about $662 (about $450 at a 7% planning rate).
• $200,000 earning 10% for a year makes $20,000, with no buyers at all, though some years it loses instead.

A note can beat the market on a small sum and still be the smaller source of dollars. Volume also changes the rules. Under Regulation Z, a person who extended credit secured by a dwelling (which includes a mobile home used as a residence) more than 5 times in the preceding calendar year “regularly extends” credit, which is part of the test for being a creditor, and creditors carry Truth in Lending duties, including the ability-to-repay rule for consumer credit secured by a dwelling. A separate exclusion, for a seller who finances three or fewer properties in any 12 months (among other conditions: fully amortizing financing, a fixed rate or one adjustable only after five or more years, and a good-faith finding that the buyer can repay), only keeps that seller out of the definition of a loan originator; it is not an exemption from everything. States add their own rules. The owner financing guide covers them in plain terms.

Default risk: the rate is only controlled if the buyer pays

Every number above assumes 36 payments on time. The return you set on paper becomes the return you get only if the buyer keeps paying, and that part you do not control. Here is the same deal when the buyer stops after 8 payments and you pay $800 to repossess:

Three things decide how much default costs you, and all three are worth more attention than the rate:

• What you can recover. A home you can take back and resell turns a loss into a delay. Knowing how repossession works in your state, and what it costs, is part of pricing the deal.
• How much is at risk when it happens. A bigger down payment and a lower cost leave less to lose, which is why the same levers that raise the return also cut the risk.
• Whether the payment fits the buyer. A higher rate raises the payment, and a bigger payment is harder to keep up.

The buyer’s side of the same $6,000 note over 36 months, with $1,500 down:

Rates also run into a federal line. A first-lien loan on a dwelling that is personal property, for less than $50,000, is a high-cost mortgage under Regulation Z if its APR is more than 8.5 percentage points above the average prime offer rate for a comparable loan, and high-cost loans carry extra rules. Check where your rate sits before you raise it, and check your state’s limits too.

What can you control in stocks?

Not the return. The S&P 500 compounded about 10.0% a year from 1928 to 2025, with a simple average of 11.9%, and lost money in 26 of those 98 years. Nobody chooses which years they get, and the future can be worse than the past, which is why a cautious 7% before inflation is a better planning figure than 10%.

What you can control is how much of the market’s return reaches you:

• Costs: fund fees and advisory fees come off every year, whatever the market does.
• Taxes: which accounts you use changes how much of the gain you keep.
• Time: how early you start and how long you stay invested.
• Behaviour: whether you sell after a drop and miss the recovery.

That is control of a different kind: not over the return, but over the leaks between the market and you. It needs no deals, no buyers and almost none of your time.

So what is the best way to control your rate of return?

Your job as an investor is to control your return. Honestly done, in a deal you write, it looks like this, in order of how much each step moves the result:

1. Buy right. The price you pay is the biggest lever, and it is set the day you buy. It adds profit, cuts the cash at risk and speeds payback all at once.
2. Keep your own cash small. A real down payment protects you twice: it shrinks your stake and gives the buyer something to lose by walking away.
3. Choose the term for what you will do with the cash. Shorter if you have the next deal waiting; longer for more dollars if the payments would just sit.
4. Protect against default with a payment the buyer can carry, collateral you can recover, and a cushion for empty months.
5. Set the rate last, fairly, within federal and state limits, knowing it is the weakest lever and the one the buyer feels most.
6. Judge the result in dollars, with cash at risk and payback month beside the percentage, and against what the same money would do in a plain index fund.

If the hands-on route is not for you, the control you have in stocks is still worth taking, and the first move is the same either way: stop paying interest before you try to collect it. The guide to making money work for you starts there.