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Gross Income Multiplier: Formula, Steps & Example

How to calculate gross income multiplier?

Gross Income Multiplier (GIM) is a quick way to compare income-producing properties by relating the purchase price to the property’s gross income. It’s popular because it’s simple and fast, but it’s best used as an early screening tool rather than a final decision-maker.

The gross income multiplier formula

GIM = Property Price ÷ Gross Annual Income

“Gross annual income” typically means total scheduled rent (and other recurring income like parking or laundry) before expenses, vacancies, and debt payments.

Step-by-step calculation

1) Confirm the property price. Use the asking price, purchase price, or a market value estimate—just be consistent when comparing multiple deals.

2) Calculate gross annual income. Add up all monthly rents and other monthly income, then multiply by 12.

3) Divide price by gross annual income. The result is the GIM.

Example

If a duplex costs $420,000 and collects $3,500 per month in total rent, gross annual income is $3,500 × 12 = $42,000. GIM = $420,000 ÷ $42,000 = 10.

How to interpret the result

Lower GIMs generally suggest you’re paying less per dollar of gross income, but that doesn’t automatically mean “better.” Two properties can share the same GIM while having very different expenses, vacancy rates, deferred maintenance, or tenant quality. Use GIM to narrow your shortlist, then validate with net operating income (NOI), cap rate, and cash flow.

For more context on using multipliers alongside other income approaches, visit this guide on income multipliers and building multiple income streams.

For Gross Income Multiplier: Formula, Steps & Example, the best answer depends on fit, material, care instructions, and how the product will be used day to day.

Checking those details first helps avoid a poor match and keeps the choice practical after delivery.

FAQ

What’s the difference between GIM and GRM?

GRM (Gross Rent Multiplier) usually uses gross rent only, while GIM can include other gross income sources beyond rent. In casual use, people sometimes use the terms interchangeably, so it’s smart to ask what income is included.