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Other Income Ratio Calculator

Other income lines — laundry, parking, pet rent, RUBS, storage — are easy to overlook but often drive 5-10% of NOI. This calculator computes the ratio of other income to rent, per-unit benchmarks, and share of EGI to show whether ancillary revenue is being optimized.

Annual other income

Annual rent collected

Number of units

Other income ratio (of rent)

8.33%

Other income share of EGI

7.69%

Other income per unit / year

$1,500

Other income per unit / month

$125

Effective gross income

$780,000

How the math works

Other income — laundry, parking, pet rent, RUBS, late fees, application fees, storage — should be 5-10% of rent on stabilized multifamily. Properties below 3% are leaving money on the table; above 12% may have aggressive fee structures that lenders discount in underwriting.

Per-unit-per-year benchmarks: $600-$900/unit in well-operated Class A multifamily. Older Class C: $200-$400. Urban high-rise with parking and ancillaries: $1,200+/unit.

Editorial noteMaintained by EveryCalc - Reviewed June 2026

EveryCalc calculators are designed for fast, practical estimates with transparent inputs and no required account. We use plain formulas, visible assumptions, and related tools so visitors can check the result from more than one angle.

Results are informational only. For financial, tax, legal, medical, construction, or other high-impact decisions, verify the output against primary sources or a qualified professional.

Learn more about our review process on the EveryCalc methodology page.

How this calculator works

What this page estimates

This Other Income Ratio Calculator is built to give a quick, browser-based estimate for other income ratio. Other income lines — laundry, parking, pet rent, RUBS, storage — are easy to overlook but often drive 5-10% of NOI. This calculator computes the ratio of other income to rent, per-unit benchmarks, and share of EGI to show whether ancillary revenue is being optimized. The inputs stay on the page during normal use, and the result should be treated as an estimate for planning, comparison, or education rather than professional advice.

Calculation approach

The calculator applies the standard relationship implied by the inputs, then formats the answer so it can be checked and reused. For finance tools, the most important step is using consistent units, rates, time periods, and assumptions before comparing the result with another calculator or outside quote.

Example workflow

For example, start with a realistic value you already know, change one input at a time, and watch how the answer moves. That makes it easier to tell whether the result is being driven by the main amount, the rate, the time period, or a unit conversion.

Practical checks

Use current, real-world numbers when the result affects money, health, tax, or legal decisions.
Run a low, base, and high case when the inputs are estimates.
Check the related calculators below when the next decision depends on a different assumption.

How to interpret the other income ratio result

Best use

Use the result as a planning number for comparing payments, rates, returns, tax reserves, or cash-flow choices before you request a quote or make a commitment.

Cross-check

Compare the answer with the contract, lender estimate, tax form, brokerage statement, payroll record, or invoice that will control the real-world outcome.

Watch for

Do not rely on a single optimistic rate, return, or fee assumption. Money pages work best when you run low, base, and high cases and keep professional advice separate from the estimate.

This page belongs to the Finance calculator library, so the answer should be read in the context of the decision you are modeling rather than as a universal rule.

Before relying on this other income ratio estimate

Most calculator mistakes come from the inputs, not the arithmetic. Use this short audit before you reuse the answer in a spreadsheet, quote, application, or important conversation.

Confirm source numbers

Match balances, rates, fees, taxes, income, and payment dates against the lender quote, payroll record, tax form, statement, invoice, or contract.

Separate cash flow from total cost

A lower monthly payment can still cost more over time if fees, interest, taxes, or a longer term are hidden in the structure.

Run conservative cases

Test at least one higher-cost or lower-return case before using the output for a purchase, refinance, investment, loan, or tax decision.

Rerun this page when the rate, price, term, fee, tax rule, income, expense, or expected holding period changes.

How to Use

Enter annual other income (excludes rent and utility pass-throughs).
Enter annual rent collected.
Enter unit count.
Read ratio, per-unit contribution, and share of EGI.

Frequently Asked Questions

What counts as other income?

Laundry, parking, pet rent, pet fee, storage, late fees, application fees, RUBS utility reimbursements, cable/internet bulk revenue, vending, short-term premium. Anything that isn't contract base rent.

Why underwrite separately?

Lenders and appraisers underwrite other income with a higher risk discount (often 50-70% of trailing). Base rent is more stable; ancillary revenue can evaporate when management changes. Always separate in the pro forma.

Common ways to grow?

RUBS (resident utility billing) adds $30-$60/unit/month. Pet rent at $35-$50/unit/month. Package lockers or pet spas add amenity fees. Parking/carports add $50-$200/stall/month.