Understanding gross effective income: A key metric for property managers

Jake Belding

Published on June 12, 2025

One of the most important financial metrics property managers use to gauge property performance is gross effective income (GEI). This metric helps you understand how much income a property generates after accounting for certain adjustments, such as vacancies, rent concessions, and other factors that reduce potential income.

In this post, we’ll break down what GEI is, how it’s calculated, and why it’s a critical tool in managing your property’s financial health.

What Is Gross Effective Income?

Gross effective income (GEI) is the total income a property generates, adjusted for factors that can reduce the ideal income. This includes things like vacant units, rent concessions, and other non-recoverable expenses. Essentially, GEI gives you a more accurate picture of the property’s income potential compared to gross scheduled income (GSI)—often referred to simply as gross income—which is the total income the property could generate if it were fully occupied and tenants paid full rent without any discounts.

Adjusting gross income to reflect these realities means that GEI offers a more accurate representation of the actual financial performance of the property. Property managers rely on GEI to make informed decisions regarding budgeting, setting rent prices, and evaluating the effectiveness of leasing strategies, ensuring that their financial planning aligns with the property’s true earning capacity.

By understanding GEI, you can better assess the actual financial performance of your property and make informed decisions about things like setting rent prices, planning your budget, or determining the effectiveness of your leasing strategies.

Components of Gross Effective Income

To calculate GEI, you need to understand the key components that contribute to it. Let’s look at these in detail:

1. Potential Rent

Potential rent is the total amount of rent that would be collected if all units in the property were fully occupied and all tenants paid the full agreed-upon rent. This is your starting point when calculating GEI.

2. Vacancy Loss

Vacancy loss refers to the rent lost due to vacant units. When a unit is empty, no rent is collected, so you need to subtract this amount from your potential rent. A high vacancy rate means more income loss, which directly impacts your GEI.

3. Concessions

Concessions are discounts or incentives that you offer to tenants, such as reduced rent for the first month or a free parking space. These are usually given to attract or retain tenants but reduce the amount of rent you actually collect. Concessions are subtracted from potential rent to calculate GEI.

4. Other Adjustments

Other adjustments can include factors like non-recoverable expenses, unpaid rent, or allowances for tenant improvements that affect the property’s income. These expenses also need to be accounted for when calculating GEI.

Formula for Gross Effective Income

Now that we understand the components of GEI, here’s the basic formula for calculating it:

GEI = Potential Rent – Vacancy Loss – Concessions – Other Adjustments 

This formula provides a simplified representation of how to calculate gross effective income. Keep in mind that there could be variations depending on the specific circumstances of your property or region, but the main idea is to subtract the income losses from your potential rent.

Why Gross Effective Income Matters

Understanding GEI is essential for residential property managers because it gives you a clearer picture of your property’s actual income potential. Here’s why it’s so important:

1. More Realistic Picture of Income

Unlike Gross scheduled income (GSI), which doesn’t account for vacancies or concessions, GEI reflects the reality of what you’re actually collecting in rent. This makes GEI a more accurate metric for assessing the property’s financial health.

2. Informed Decision-Making

With GEI, you have a better understanding of how various factors like vacancies or concessions impact the property’s performance. This can guide decisions on pricing, tenant retention strategies, and even budgeting for property maintenance or improvements.

3. Helps Set Rent Prices

If your GEI is lower than expected, it might signal that rents are too high or that your property is facing higher-than-average vacancies. By using GEI, you can adjust rents or strategies to improve income and optimize the property’s financial performance.

4. Improved Budgeting and Planning

Knowing your GEI helps in setting realistic budgets and forecasts. It also allows you to plan for things like maintenance costs, potential upgrades, or even deciding if it’s time to make changes in your leasing strategy.

Practical Example: How to Calculate GEI

Let’s walk through a simple, hypothetical example to illustrate how to calculate gross effective income:

Property Details:

  • The property has 20 units.
  • The rent per unit is $1,000/month.
  • The vacancy rate is 10%.
  • Concessions amount to $2,000/month.

Step-by-Step Calculation:

1. Potential Rent: 

Potential rent is simply the total rent that would be collected if all units were fully occupied.

 Potential Rent = 20 units × $1,000/month = $20,000/month. 

2. Vacancy Loss: 

With a 10% vacancy rate, 10% of the units are empty and not generating income.

 Vacancy Loss = 10% of $20,000 = $2,000/month. 

3. Concessions: 

In this example, the total concessions provided to tenants amount to $2,000.

 Concessions = $2,000/month. 

4. Other Adjustments: 

Let’s assume there are no additional adjustments for this example. If there were, they would need to be subtracted here.

GEI Calculation

GEI = Potential Rent – Vacancy Loss – Concessions 

GEI = $20,000 – $2,000 – $2,000 = $16,000/month 

So, in this example, the gross effective income for the property is $16,000 per month. This is the actual income the property generates after accounting for vacancies and concessions.

Frequently Asked Questions

What is Gross Effective Income (GEI)?

GEI is the actual income generated by a property after accounting for vacancies, concessions, and other adjustments. It provides a more accurate view of a property’s income potential than simply considering potential rent.

Why is GEI important for property managers?

Understanding GEI helps property managers make informed decisions about pricing, budgeting, and overall property management. By regularly calculating GEI, managers can identify areas for improvement, such as reducing vacancies or limiting concessions, which can increase profitability.

How do you calculate GEI?

GEI is calculated by subtracting vacancy losses and concessions from the potential rent. The formula is GEI = Potential Rent – Vacancy Loss – Concessions. This calculation gives a clear picture of the actual income the property generates.

What factors can affect GEI?

Several factors can affect GEI, including changes in market rent, fluctuations in occupancy rates, the economic environment, and the level of concessions offered. Keeping track of these factors can help property managers adjust strategies to maximize income.

How often should GEI be calculated?

GEI should ideally be calculated on a monthly basis to provide an up-to-date understanding of a property’s financial performance. Regular calculation helps in identifying trends and making timely adjustments to property management strategies.

Can GEI be used for investment analysis?

Yes, GEI is a critical metric for investment analysis. Investors use GEI to evaluate the profitability of a property, assess its financial health, and compare it with other investment opportunities. A higher GEI indicates a more profitable and potentially valuable property.

 

 

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Jake Belding
98 Posts

Jake is a Content Marketing Specialist at Buildium, based in San Francisco, California. With a background in enterprise SaaS and startup communications, Jake writes about technology's impact on daily life.

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