What you put in
Everything you put in: the down payment, closing costs, and any capital funded at acquisition. All of it has to earn the return.
The sale lands at the end of the last year.
What it earns while you hold it
Income after vacancy and operating expenses, before debt service, income taxes, and capital expenditure.
Compounds from year two. Year one is the figure you typed. Enter a negative figure for a shrinking NOI.
Principal and interest for twelve months, held flat across the hold. Zero gives the unlevered IRR.

The payment does not grow and the income does, so every dollar of NOI growth drops straight to the equity. That is why the cash flow column below climbs faster than the NOI column beside it.

What you get out
After selling costs and after the loan is repaid. Not the sale price. This is the single most common way a published IRR is overstated.
Your required return. The IRR is the rate at which the present value below is exactly zero.
Internal rate of return11.68%
Equity multiple
1.69x
Profit over the hold
$2,548,481
Year-one cash-on-cash
3.24%
Net present value at 8.00%
$633,736

The cash flows behind that number

An IRR you cannot see the series for is a number nobody can check. This is the series being solved, discounted in the last column at the rate you entered. Add the last column up and you get the net present value; the IRR is the rate that makes that sum zero.

The same deal, said three other ways

MeasureValueWhat it ignores
Equity multiple1.69xTime. $6,248,481 back on $3,700,000 in is the same multiple whether it takes three years or thirty.
Average annual cash-on-cash4.25%The exit. It measures the operating years only, which is why a deal can pay well and still lose money.
Average annual return13.78%When the money came back, which is the whole thing an IRR is for. Profit divided by equity divided by years. It is not an IRR and should never be labelled as one.

Annual, end-of-period flows, the convention a memo means by an IRR. Growth compounds from year two. The exit figure is whatever you typed, so the answer is only as good as that estimate: it carries the exit cap rate, the selling costs, and the loan balance all inside one number.

Everything above is computed in your browser. Nothing you type is sent to Altyst or to the site hosting this calculator, and this frame sets no cookie. It is arithmetic on the figures you entered, not investment advice.

This solves an IRR once you know the cash flows. Working out what those cash flows are is the underwriting: the rent roll, the T-12, the debt, the rollover, and the exit. Altyst reads the documents and builds all of it.