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Home office deduction | 2021 tax returns

If you work from home, you could lower your tax bill with this deduction.

Small business owners, freelancers and self-employed workers can use the home office deduction to lower their tax bill. Read on to find out how much it’s worth, how to calculate your deduction and what to watch out for.

What is the home office deduction?

The home office deduction reimburses you for expenses related to having a home office, as long as it’s regularly and exclusively used for business. Items you can write off include rent or mortgage interest, utilities, real estate taxes, maintenance, repairs and more.

How much is the home office deduction worth in 2021?

Your home office deduction depends on the size of your space and which method you use to calculate your deduction.


The Tax Cuts and Jobs Act of 2017 eliminated the miscellaneous deduction for home office expenses for 2018 to 2025. This means you can no longer deduct expenses for unreimbursed employee business expenses, tax-related expenses and hobby-related expenses.

Your home office deduction can’t be more than your total business income for the year. If your expenses exceed your deduction limit, you may be able to carry over excess expenses to future tax years.

The home office deduction is a federal deduction, so it doesn’t change the amount of state taxes you owe.

How much was the home office deduction worth in previous years?

The home office deduction hasn’t changed since 2014.

Who qualifies for the home office deduction?

There are two basic requirements you must meet to qualify for the home office deduction:

  • Your office is regularly and exclusively used for business. Your space is kept in a separate room that’s only used for business.
  • It’s your principal place of business. Your office doesn’t have to be the only place you conduct business, but you do have to use it for at least part of your business, even if it’s for recordkeeping or maintaining your budget.

You’re eligible to claim the home office deduction regardless of the type of structure you live in, as long as it’s your permanent residence. Common structures include:

  • Houses.
  • Apartments.
  • Studios.
  • Garages.
  • Houseboats.
  • Condos.

Am I eligible for the home office deduction during the coronavirus pandemic?

Working from home has quickly become the new norm for many people since the COVID-19 pandemic. But unfortunately, you won’t get to write off any expenses unless you’re an independent contractor or entrepreneur.

Prior to the Tax Cuts and Jobs Act of 2017, most people who worked from home could claim the home office deduction. But with the way the deduction currently works, you can’t claim it unless it’s your “principal place of business.”

How to claim the home office deduction

Use Form 8829 to claim expenses for the home office deduction and calculate any carryover limits. The process looks like this:

  1. Calculate what percentage of your home is used for business.
  2. Enter your total business income and deductible expenses.
  3. Subtract your expenses according to the form’s instructions until you have your allowable expenses.
  4. Calculate your home’s depreciation.
  5. Determine if you have any unallowable expenses that you need to carry over to future tax years.
  6. Take the amount written on Line 36 of Form 8829 and enter it on Line 30 of Schedule C.
  7. Make sure you attach Form 8829 to Schedule C unless you’re using the simplified method.

You list two types of expenses on Form 8829: direct and indirect expenses. Direct expenses are used specifically for your business and home office. Indirect expenses relate to your house as a whole, so you can only deduct a percentage as a home office expense.

This chart breaks down common direct and indirect expenses:

Direct expenseIndirect expense
Mortgage interest
Real estate taxes
Utility bills
Homeowners’ or renters’ insurance
Painting your home office
Hiring a professional cleaner
Performing maintenance and repairs

How to calculate your home office deduction

Use either the simplified method or the regular method to calculate your home office deduction.

  • Simplified method
    If you use the simplified method, you won’t actually write off any expenses. You’ll calculate your deduction by multiplying the square footage of your home office by $5. But you can only use this method for home offices less than 300 square feet.
  • Regular method

The regular method requires a bit more math. To calculate it, you’ll need to:

  1. Calculate what percentage of your home is used for business by dividing the total square footage of your home by the square footage of your business.
  2. Add up all your direct home-related expenses.
  3. Add up all your indirect expenses.
  4. Multiply your indirect expenses by your home office percentage.
  5. Add your direct expenses to the weighted indirect expenses.
Let’s look at an example of the regular method.

You live in a 1,000 square foot home where you use 10% or 100 square feet for your home office. You’re eligible to write off 100% of direct expenses but only 10% of indirect expenses because that’s the percentage of your home used for business.

This tax year you spent $500 on office supplies, $2,000 in mortgage interest and $1,500 in utilities. Claim 100% of the office supplies because it’s a direct expense, but only 10% of the others. Using the steps above, your home office deduction would be $850.

You came out ahead by using the regular method because your deduction would only be $500 with the simplified method (100 square feet X $5 = $500).

What to watch out for

Watch out for the following when claiming your home office deduction:

  • Capital gains tax on depreciation. If you use the regular method to claim your home office deduction and include home depreciation as an expense, you’ll pay capital gains taxes on the depreciation deduction if you sell your home.
  • Simplified method may not be best. Run the numbers both ways to see if the simplified or regular method results in the highest deduction.
  • Can’t claim expenses under simplified method. If you want to write off utility bills, rent, mortgage payments or more, you’ll need to use the regular method.
  • Can’t carry over with simplified method. If you need to carry over excess expenses to future tax years, you’ll need to use the regular method.
  • You’ll need to keep detailed records. Taxpayers using the regular method must keep detailed receipts of any home-related expenses, including:
    • Rent or mortgage payments.
    • Utilities.
    • Property and real estate taxes.
    • Maintenance and repairs.
    • Depreciation.
    • HOA.
    • Insurance.
    • Security.

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If you have a home office, you may also qualify for these related credits and deductions:

  • Mortgage interest deduction. Taxpayers with a mortgage or home equity loan can deduct up to 100% of interest from their tax return.
  • Property tax deduction. Beginning in 2018 all local, state and property taxes are deductible up to $10,000.
  • Home renovation tax credit. If you made your home more energy efficient this year, you may be eligible for the home renovation tax credit.
  • Business car expenses deduction. Deduct 100% of expenses if your car is used only for business or a percentage if it’s also used for personal reasons subject to some limitations. The standard mileage rate is 57.5 cents for 2020 and 56 cents for 2021.

Bottom line

If you conduct business from your home, you could lower your taxes by taking the home office deduction. There are two different methods you can use to calculate it.

The simple option is the easiest, but the regular method could save you the most depending on your tax situation. If you use the regular method, you’ll need to keep detailed records of all your home-related expenses.

Before you file taxes, consider hiring a professional or exploring an online service that’ll do these types of calculations for you.

Frequently asked questions

Should I use the simplified home office deduction?

You may be better off using the regular method if you:

  • Have a home office over 300 square feet
  • Rent in a high cost of living area
  • Have high home-related costs because of your home-based business
  • Have high mortgage interest and/or property taxes

How can remote employees deduct home office expenses?

Remote workers and those who telecommute no longer qualify for the home office deduction. If you’re unsure if you qualify, look at your paycheck. If federal income and/or state taxes are withheld from your paycheck, you don’t qualify for the home office deduction. This rule went into effect after the Tax Cuts and Jobs Act was passed in 2018.

Will claiming a home office trigger an audit?

Many people fear that claiming the home office deduction will result in an audit, but this isn’t true. If you qualify for this deduction, don’t let fear hold you back from taking advantage of it.

When can I write off my Internet bill if I work from home?

If you use the regular method to claim your deduction, you can deduct all or part of your Internet bill.

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