The Landlord's Rental Math Companion

Monthly cash flow, gross rental yield, rent increases, and a running rent roll: type them the way you would jot them on a property sheet and read the answers next to each line.

Built for landlords

Monthly Cash Flow

Define `rent = 2100`, `mortgage = 1180`, `taxes = 260`, and `insurance = 90`, then `cash flow = rent - mortgage - taxes - insurance`. Change any number and the result updates instantly.

Rent Increases and Reserves

Percent math reads naturally: `rent + 4%` for next year's rent, or `repair reserve = 8% of rent` to set money aside for repairs each month.

Gross Yield and Rent Roll

Divide a year of rent by the purchase price to compare properties, and use `total` under a list of unit rents to see the whole building at a glance.

One Tab Per Property

With Lifetime, keep every property on its own tab. Rename tabs by address so a new offer does not overwrite the numbers from the building you already own.

See It in Action

Monthly cash flow

rent = 2100
mortgage = 1180
taxes = 260
insurance = 90
repair reserve = 8% of rent
cash flow = rent - mortgage - taxes - insurance - repair reserve

Gross rental yield

purchase price = 280000
monthly rent = 2100
annual rent = monthly rent * 12
gross yield = annual rent / purchase price * 100

Rent roll

unit a = 1450
unit b = 1620
unit c = 1380
total

Start calculating smarter, landlords.

Notes Calculator is free to start, runs in your browser, and works on every desktop. Upgrade later for sync and unlimited tabs.

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