A woman graphic artist poses in her home studio at the viewer.
Running a home-based business can offer tax deductions on rent, employee payments, home repairs in addition to typical business expenses. — Getty Images/Abraham Gonzalez Fernandez

With relatively low startup costs, many entrepreneurs start and grow their businesses from their homes. Home businesses may also be eligible for tax deductions that can save you money, both in the short term and long term.

Here's what you need to know about tax deductions for home-based businesses, including which expenses are eligible and how to qualify.

The 'exclusive use' test

To take the home office deduction, you must show that a portion of your home is your principal place of business and that this space is regularly and exclusively used for conducting business. The IRS refers to this as the "exclusive use" test.

For instance, a spare room in your home that is only used as your business office can be claimed for the home office deduction. However, a bedroom or living room where you work on business tasks cannot be claimed, because you use those spaces for other personal purposes.

There are exceptions to the exclusive use test, including businesses that store inventory or product samples or use their home as a daycare facility.

Additionally, you must be a registered business owner or independent contractor to take the home office deduction. You cannot take the home office deduction if you work from home as an employee of a business.

[Read more: How to Start a Small Business at Home]

What can I deduct from my taxes as a home-based business?

The following list contains the most common deductions home-based business owners claim on their tax returns.

Home-related expenses

Home office-related deductions are based on the percentage of your home that you use for business.

If you meet IRS guidelines, you can deduct the following home-related expenses:

  • Homeowners insurance.
  • Homeowners association fees.
  • Cleaning services or cleaning supplies used in your business space.
  • Mortgage insurance and interest.
  • Utilities, including electricity, internet, heat and phone.

Repairs and maintenance

If you make home repairs or upgrades related directly to your business space, you may also write these expenses off on your taxes. The amount you can write off depends on whether the expense is direct (it only benefits your home office) or indirect (it benefits your entire home).

  • Direct: If you spend $100 to fix a window in your home office, you may deduct the full $100 on your taxes.
  • Indirect: If you pay $1,000 to repair a leak in your roof, you may only deduct a percentage of that expense equivalent to the percentage of your home used for business.

Other business expenses

To qualify as a deductible, a business expense must be considered both ordinary and necessary, meaning the expense is common and helpful for your trade or industry.

The following expenses may be deducted on any home-based business tax return, regardless of whether you are eligible for the home office deduction:

  • Cost of goods sold: The following expenses can be figured into the cost of goods sold: storage, factory overhead, direct labor costs, and the costs of products or raw materials, including freight.
  • Capital expenses: Capital expenses — including business startup costs, business assets, and improvements — are costs that you are required to capitalize rather than deduct because they are a part of your investment in your business.
  • Business use of your car: As with home expenses, the vehicle use for business deduction must be calculated based on the percentage of miles driven for business purposes versus personal trips.
  • Employee payments and retirement plans: Generally, you can deduct the cost of paying employees, and retirement savings plans also come with tax breaks.
  • Rent expenses: Rent deduction is only applicable if you do not and will not receive equity in or title to the property.
  • Interest: If you borrowed money for business activities, you may deduct the interest.
  • Business taxes: You are allowed to deduct various federal, state, local, and foreign taxes that directly affect your trade or business.
  • Business insurance: You can deduct insurance as a business expense if it is both ordinary and necessary for your trade, business, or profession.
  • Travel expenses: You can claim a deduction for travel-related expenses if you reimburse them under an accountable plan.
  • Supplies and materials: You can generally deduct the cost of business-related supplies and materials consumed or used within a tax year.
  • Professional services: Fees incurred from professional services that are ordinary and necessary, such as accounting, consulting, legal, or contract labor, can be deducted as a business expense.
  • Marketing and business development: Generally, expenses that are used to find new customers and keep existing clients can be deducted.

The IRS provides a detailed explanation of these types of expenses and what is eligible for deduction.

[Read More: Tax Basics for Businesses]

Before claiming the home office deduction, make sure your business qualifies to avoid claiming any deductions you aren't eligible for.

How to calculate the home office deduction

There are two different methods you can use when calculating and determining home office deductions: the regular method and the simplified method.

Regular method

First, you can go by the percentage of your home that is being used for the business. This works by measuring the size of your home office as a percentage of the total square footage of your residence. The math formula you would use is as follows:

Business percentage = (Home office square footage / Total home square footage) x 100

For example, if your office is 75 square feet and the total area of your home is 1,000 square feet, the calculated business percentage is 7.5%.

Any direct business expenses can be deducted in full, and any indirect expenses can be deducted at that business percentage. (If you are filing your taxes as a self-employed person using Form 1040, you can use Form 8829 to determine the allowable expenses for the business use of your home.) In keeping with our example, you could deduct 7.5% of your rent or mortgage since that money is spent on your office space. You can generally apply that percentage to your electric and internet bills as well.

If you only use a home workplace or office part of the time, you will need to multiply the business percentage by the percentage of time that you use the space.

Simplified option

A simpler calculation is to divide the number of rooms in your home you use for business by the number of rooms in the house; however, this calculation is only accurate if all the rooms in your house are a similar size:

Business percentage = (Number of rooms used for business / Total number of rooms) x 100

Special rules also apply for certain professions, such as those who use their home as a daycare.

The second method for claiming a deduction uses a determined rate, which is then multiplied by the amount of square footage that is used for business within the home. The prescribed rate is currently set at $5 per square foot with a 300-square-foot maximum.

Deduction = (Square footage used for business) x $5

This would mean that a deduction for an office measuring 200 square feet would be $1,000 because you would multiply the square footage by the $5 per square foot rate (200 square feet x $5 per square foot).

Which method is best for you?

While the simplified method may be easier to calculate and claim, it may not offer entrepreneurs all the deductions they qualify for. Currently, the simplified method only allows up to $1,500 in deductions. The regular method is based on actual expenses incurred and does not have a hard dollar cap — so long as the deduction does not exceed the income generated from business use of the home.

The simplified option will likely work best for those who are starting freelancing or a small business, since they will likely have fewer expenses. If your business is more developed and has more expenses, the regular option may be a better fit. Since eligibility and qualifications may change from year to year, it's important to stay up to date on the current qualifications and rules for a home office deduction.

Accounting tips for home-based businesses

Accounting is incredibly important for any business, but home-based business owners need to pay special attention to their finances and expenses if they want to save the most money during tax time.

Here are a few key tips to exercise throughout the year in preparation for tax season.

Separate the 'work' from the 'personal'

Keeping your business and personal finances, expenses, and assets well-organized — and separate — is especially important for home-based businesses. Follow these tips:

  • Create a separate space for your business. If you want to take a home office deduction, ensure that your workspace meets the exclusive use test.
  • Separate business and personal expenses. Maintaining distinctly separate accounts for business finances and personal finances keeps your books clean and organized when you need to evaluate your business income and expenses.
  • Track all business use of personal assets. If you use assets like your laptop, cell phone, and car for both business and personal purposes, keep a record of any business use so you can accurately calculate the percentage used for business.

Plan ahead to avoid surprises

Home-based businesses should pay extra attention to ensure they don't miss any crucial tax and financial obligations. The following steps can help ensure you are well prepared:

  • Account for estimated and self-employment taxes. Unlike a traditional job in which an employer withholds taxes, Social Security, and Medicare payments from an employee’s check, business owners must pay these expenses. Sole proprietors, partners, limited liability companies, and S corporations are generally required to pay estimated quarterly taxes.
  • Factor in location. If you have clients in other states or countries, you may need to report income in those places as well. Additionally, you likely have to pay more taxes on international income. For these, keep track of the amount of income in U.S. dollars instead of the country's currency.
  • Prepare a profit and loss statement. Even if it isn’t required of you for other purposes, calculating your profits and losses leading into tax season can help minimize the likelihood of a surprise. It also gives you an opportunity to get your receipts in order and can be handed to the accountant.

Leverage the right tools and professionals

Streamline your accounting and tax processes to avoid errors and save valuable time come tax season by doing the following:

  • Set up an accounting system. To make tax season as easy as possible, implement a consistent, organized accounting system for yourself to keep track of receipts and invoices. Take special care with business dinners, work-related travel, vehicle expenses, and home office receipts.
  • Develop a system for review. The tax practices of a budding freelance business versus the needs of a larger company with multiple employees will be wildly different. Schedule and conduct periodic reviews of your accounting methods so you can adjust as needed. Additionally, keep an eye on the time and cost of your accounting methods so you can gauge your need for external support.
  • Consider using accounting software. Implementing accounting software can cut down on the time and cost you spend preparing for tax season. This is where your previous calculations come in. If the cost of accounting software makes sense for you, the right software can be a great fit for small and home-based businesses.
  • Hire an accountant. You can learn a lot about accounting and tax regulations through independent online research, but there's no substitute for the advice of an experienced professional. Follow our guide to choosing an accountant if you're looking for the right certified public accountant or accounting firm for your business.

Will I get audited by the IRS if I take the home office deduction?

While the IRS rules about home office deductions are strict, it's not guaranteed that you will get audited simply for claiming your home office. There are measures you can take to reduce your chances of getting audited.

Before claiming the home office deduction, make sure your business qualifies to avoid claiming any deductions you aren't eligible for. Maintain records of all your business expenses and purchases, and ensure that your residence, home office usage, and type of employment qualify for this expense.

The IRS has an automated system that helps detect red flags. The system compares your tax situation and deductions to others in your industry. If you claim something that others in your profession don't generally claim, or if you claim "too much" space in your home as your home office, the system may flag the return for further investigation.

If you decide to take the home office deduction, it's essential to follow the IRS guidelines to the letter, as they change somewhat frequently. A tax professional can assess and make recommendations based on your individual circumstances, allowing you to maximize your deductions while remaining in compliance.

This article was originally written by Sean Peek, Miranda Fraraccio, and Rachel Barton.

CO— aims to bring you inspiration from leading respected experts. However, before making any business decision, you should consult a professional who can advise you based on your individual situation.

CO—is committed to helping you start, run and grow your small business. Learn more about the benefits of small business membership in the U.S. Chamber of Commerce, here.

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