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Tax & Legal

Depreciation

By Momin Ali Agha3/12/2026

What is Depreciation in Real Estate & Why Does It Matter?

Depreciation is a critical concept in real estate investing, as it allows landlords and investors to recover the cost of their property over time. It's a non-cash expense that can significantly impact an investment's tax liability and cash flow. Accurate depreciation calculations are essential for investors to maximize their tax benefits, minimize their tax liability, and make informed investment decisions.

How to Calculate Depreciation (The Formula)

The depreciation formula is:

Annual Depreciation = (Cost Basis - Residual Value) / Useful Life

Where:

  • Cost Basis: The initial purchase price of the property, including closing costs and other expenses.
  • Residual Value: The estimated value of the property at the end of its useful life.
  • Useful Life: The number of years the property is expected to generate income.

Step-by-Step Practical Example

Let's say you purchase a rental property for $200,000, with a useful life of 27.5 years (the standard useful life for residential real estate). You estimate the residual value to be $50,000.

Using the depreciation calculator, you input the following values:

InputValue
Cost Basis$200,000
Residual Value$50,000
Useful Life27.5 years

The calculator outputs an annual depreciation of $5,455. This means you can claim $5,455 as a non-cash expense on your tax return each year, reducing your taxable income and minimizing your tax liability.

What is a "Good" Depreciation Rate? (Industry Benchmarks)

A good depreciation rate varies depending on the type of property, location, and market conditions. However, here are some general guidelines:

  • Residential real estate: 27.5 years (standard useful life)
  • Commercial real estate: 39 years (standard useful life)
  • Land: Not depreciable, as it's considered to have an infinite useful life

Aim to depreciate your property at a rate that accurately reflects its useful life and residual value. Consult with a tax professional or accountant to determine the best depreciation strategy for your investment.

Common Mistakes to Avoid

When calculating depreciation, investors often make the following mistakes:

  • Incorrect useful life: Using an incorrect useful life can result in inaccurate depreciation calculations and potential tax penalties.
  • Inadequate record-keeping: Failing to keep accurate records of property purchases, improvements, and sales can lead to missed depreciation opportunities and tax errors.
  • Insufficient residual value: Underestimating the residual value of a property can result in over-depreciation and potential tax liabilities.

Frequently Asked Questions (FAQ)

Q: Can I depreciate a property that's not generating income?

A: Yes, you can depreciate a property even if it's not generating income, as long as it's being held for investment purposes.

Q: Can I change my depreciation method after the initial calculation?

A: Yes, you can change your depreciation method, but it may require filing an amended tax return and potentially paying penalties.

Q: How does depreciation affect my cash flow?

A: Depreciation is a non-cash expense, so it doesn't directly impact your cash flow. However, it can reduce your taxable income, which can increase your cash flow by reducing your tax liability.

About the Author: Momin Ali Agha

Momin is the founder of Best Rent Management, building free tools for the real estate investment community. With a focus on financial precision and accessibility, he aims to simplify complex property metrics for everyone.

Learn more about the vision →