Home-based business owners may be able to deduct some ordinary and necessary business expenses, including a portion of home costs if the space qualifies, but rules are specific, and you should confirm details with a tax professional or the IRS. This article is general information for U.S. readers and is not tax advice. Rules change and differ for employees, partnerships, and corporations.
Start with the basics of business expenses
In general, expenses that are ordinary (common in your trade) and necessary (helpful and appropriate) for your business can be deductible. Examples include supplies, software, advertising, professional fees, business insurance, licenses, and a share of phone and internet used for business. Personal expenses are not deductible. Keep clear records so you can separate the two.
The home office deduction
The IRS allows qualifying taxpayers to deduct expenses for business use of part of their home, generally if that part is used regularly and exclusively as the principal place of business or for meeting clients. There are two common calculation methods: a simplified method based on square footage up to a limit, and a regular method that allocates actual expenses such as mortgage interest, rent, utilities, insurance, and repairs by the business percentage of the home. The right method depends on your situation. Check current IRS guidance and consult a professional, because limitations and exceptions apply.
Other expenses home-based owners often consider
| Expense | Notes |
|---|---|
| Equipment and software | Computers, printers, subscriptions; some purchases may be depreciated or expensed under specific rules |
| Internet and phone | Business-use portion only |
| Vehicle expenses | Standard mileage or actual costs; keep a mileage log |
| Advertising and website | Domain, hosting, ads, and design |
| Professional services | Accountants, attorneys, consultants |
| Insurance | Business policies |
| Education | Training that maintains or improves skills for your current business, subject to rules |
| Supplies and inventory | Inventory is generally handled differently from ordinary supplies |
Keep clean records
- Open a separate business bank account and credit card; see LLC versus sole proprietorship.
- Save receipts digitally and note the business purpose.
- Use bookkeeping software or a simple spreadsheet, and reconcile monthly.
- Keep a mileage log with dates, destinations, and purposes.
- Record home office square footage and photos of the space.
Consider hiring a bookkeeper; bookkeepers who work from home often serve new owners at a modest cost.
Self-employment tax and estimated payments
Self-employed people generally pay self-employment tax in addition to income tax, and may need to make quarterly estimated payments. Set aside a portion of each payment received so you are not surprised at tax time. A professional can help calculate the right amount for your situation.
Common mistakes
- Deducting personal expenses as business expenses.
- Claiming a home office for space that is not used exclusively for business without checking rules.
- Failing to keep mileage or receipts.
- Missing estimated payments.
- Ignoring state and local taxes, such as sales tax or business license taxes.
Hobby or business? The IRS looks at factors such as whether you operate in a businesslike manner and intend to earn a profit. Read when a side hustle becomes a business. Tax-preparation firms listed by their owners on SmartBizOpps, like Value Tax Service, are provided by the companies and are not endorsements; interview any preparer carefully, and see tax preparation business basics to understand what preparers must do.
Frequently asked questions
Can I deduct my entire rent or mortgage?
Generally no. Only the business portion of qualifying home costs may be deductible.
Do renters qualify for a home office deduction?
Renters may be eligible if the space meets the requirements. Check current rules.
Is the home office deduction an audit trigger?
Do not assume so, but accurate records matter for any deduction.
Should I use an accountant?
Many small-business owners do, especially when they have income from multiple sources, employees, or complicated expenses.
A year-end habit that saves stress
Each month, spend an hour categorizing transactions, saving receipts, and updating your mileage log. In December, review profit year-to-date, estimate taxes, and talk with your preparer about timing of purchases and retirement contributions that fit your plan. In January, gather forms, summaries, and totals before your appointment. This simple rhythm turns tax season from a scramble into a routine, and it gives you better information to manage the business all year. Remember that the law changes, so confirm the current year’s limits and forms before relying on any number.
The bottom line
Home-based owners can often deduct legitimate business expenses, but only with good records and an understanding of the rules. Separate business and personal finances, keep receipts, track mileage, plan for estimated taxes, and work with a qualified tax professional.
Photo by Alexa Williams on Unsplash
This article is general information, not financial, legal, or tax advice. Costs, earnings, and requirements vary by location and by opportunity, so verify details with the company, your state, and a qualified professional before you invest. Listings on SmartBizOpps are provided by advertisers; SmartBizOpps does not endorse or guarantee any opportunity.
