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True Cash Flow™
Monthly Rent
Two-Input Ratio Income Metrics

Other Income

Monthly income from sources other than rent (parking, laundry, storage, etc.).

Example Result

Sample Data
$0

Based on a sample $385,000 property with $2,850/month rent, 20% down, 7% interest rate.

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40-Year Projection Chart

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Other Income Formula

At Acquisition (Month 0)
OI0 = User Input (Monthly)
Projected (Month m > 0)
OI(m) = OI0 × (1 + g)m/12
where OI0 = Other Income (input), g = Other Income Appreciation Rate, m = month
Monthly User Input (Monthly) $0/mo
Annual Other Income × 12 $0/yr

How This Value Changes Over Time

At Purchase / Year 1 OI(0) = User Input; OI(m) = OI(0) × (1 + g)^(m/12)
Over Time (Year 5) Initial Other Income × (1 + Other Income Appreciation Rate)^(Year−1)

Where to Find This Value

Here's where you can find the value for Other Income:

Lease Addendums

Review lease addendums for parking, pet, storage, or laundry fees

Property Manager

Your PM can identify additional income opportunities (vending, laundry, etc.)

Calculations That Use Other Income

Platform Distribution

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Why It Matters

Other income is often overlooked in quick deal analysis but can add hundreds of dollars per month to your bottom line. Because it compounds forward just like rent, even a modest starting amount grows meaningfully over a 10- or 20-year hold. Properties with multiple income streams are also more resilient — if rent dips, other income provides a buffer. Always investigate potential ancillary income when evaluating a property, and set a realistic appreciation rate to see how it contributes to long-term returns.

Detailed Explanation

Other Income captures all recurring monthly revenue beyond base rent — parking fees, coin-op laundry, storage unit rentals, pet rent, vending machines, billboard or antenna leases, and similar ancillary sources.

At Acquisition — Month 0

This value is your user input: the actual or estimated monthly amount you expect to collect from non-rent sources at the time of purchase.

Projected — Month m > 0

Other Income compounds forward each month using the Other Income Appreciation Rate:

OI(m) = OI0 × (1 + g)m/12

where OI0 is your input at purchase, g is the annual Other Income Appreciation Rate, and m is the number of months since acquisition.

This reflects the reality that ancillary income streams — like parking or storage fees — often rise over time alongside general rent growth, or as you add and improve amenities.

Example

Sample Result
$150

Based on a sample $385,000 property with $2,850/month rent, 20% down, 7% interest rate.

Related Calculations

Gross Potential Rent

2

Total annual rental income assuming full occupancy.

$34,200 Example

Effective Gross Income

2

Actual expected income after vacancy and other income.

$32,490 Example

Net Operating Income

U

Income remaining after all operating expenses but before debt service.

$20,566 Example

Cash Flow Before Tax

V

Cash remaining after operating expenses and debt service.

-$4,023 Example

Cash Flow After Tax

W

Cash remaining after all expenses, debt service, and estimated taxes.

-$4,023 Example

Revenue Per Unit

2

Effective gross income divided by the number of units.

$32,490 Example

Run This Calculation on Your Property

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