Small Business Tax FAQ
Do I have to pay estimated tax as a small business owner?
Generally yes, if you expect to owe $1,000 or more for the year after withholding and credits. Estimated payments are usually due quarterly. Check the current IRS instructions for Form 1040-ES for the exact schedule.
What is the difference between a deduction and a credit?
A deduction reduces taxable income, so its value depends on your tax rate. A credit reduces the tax itself, dollar for dollar. A credit is usually worth more than a deduction of the same amount.
Does an extension give me more time to pay?
No. An extension gives more time to file, not to pay. Tax owed is still due by the original deadline, and interest and penalties may apply. Filing an extension request on time avoids the late-filing penalty, not the late-payment penalty.
Should I form an S corporation to save on self-employment tax?
It can reduce self-employment tax on profit above a reasonable owner salary, but it adds payroll and compliance costs. Model the result at your expected profit level before deciding. See our business structure guide.
What records should a small business keep?
Keep receipts, bank and card statements, invoices, payroll records, mileage logs and asset records. Keep records as long as they may be needed to support a return, generally at least three years from filing.
When can I deduct an equipment purchase?
Federal law provides several ways to recover equipment costs, including bonus depreciation and Section 179 expensing. Each has its own limits and phase-outs, and the best choice depends on your income that year and your plans for later years. See our year-round planning guide.
Can I deduct a home office?
Generally, a home office may qualify if part of the home is used regularly and exclusively for business. The rules have specific tests, so confirm the requirements in the current IRS publication for business use of your home before claiming it.
How do I start retirement saving through my business?
Options include SEP IRAs, SIMPLE IRAs and 401(k) plans, each with different setup rules, limits and deadlines. See owner retirement and benefits for a comparison.
Why do some owners pay tax on money they never took home?
In a sole proprietorship, partnership, LLC or S corporation, the profit flows through to the owners' returns whether or not it was withdrawn. Cash left in the business can still be taxed to you, so plan for tax before you plan distributions.
Can paying yourself too little hurt you in an S corporation?
Yes. The IRS expects an owner who works in an S corporation to be paid reasonable compensation as wages. Very low pay with large distributions can lead to the distributions being treated as wages, with payroll tax, interest and penalties.
Is it a business or a hobby in the eyes of the IRS?
The IRS looks at facts such as a profit motive, how you run the activity, your records, time spent and expertise. Hobby income is generally taxable, while hobby expenses are generally not deductible under current rules.
What happens to a deduction you cannot prove?
It can be disallowed. Business deductions generally need records showing the amount, date and business purpose, and travel, vehicle and gift expenses face stricter substantiation rules. A receipt without the purpose written down is often not enough.
Does a business loss always reduce your other income?
No. Losses can be limited by your basis in the business, at-risk rules, passive activity rules and an overall limit on large business losses for individuals. A loss on paper does not always turn into a deduction this year.
Can a self-employed owner deduct health insurance?
Often, yes, as a deduction on the personal return, if the business shows a profit and you are not eligible for a subsidized employer plan. S corporation owners with more than 2% of the stock have special reporting rules for premiums.
Is the 20% pass-through deduction automatic?
No. The qualified business income deduction is calculated on your return, and its limits depend on your income, the type of business, wages paid and property owned. Planning how you pay yourself can change the result.
What is the payroll tax trap that makes owners personally liable?
Taxes withheld from employees' pay are held in trust for the government. If they are not paid over, the IRS can assess the Trust Fund Recovery Penalty against the responsible people personally, even if the business is a corporation or LLC.
Can you put your child on the payroll?
Wages for real, age-appropriate work can be deductible. In a sole proprietorship or a partnership owned only by the child's parents, a child under 18 is generally exempt from Social Security and Medicare tax. The pay must be reasonable and documented.
How much can an owner save for retirement through the business?
More than most employees can. Plans such as a solo 401(k), SEP IRA or SIMPLE IRA allow contributions that reduce taxable income, and the limits change every year. Check the IRS limits for the year before setting a contribution.
How do you avoid the underpayment penalty on estimated tax?
Generally by paying at least 90% of this year's tax or 100% of last year's tax, whichever is smaller. The prior-year safe harbor rises to 110% if last year's adjusted gross income was over $150,000.
How much of a business meal can you deduct?
Generally 50% of the cost of a business meal that is not lavish and has a clear business purpose, with the people and topic recorded. Entertainment, such as tickets and club dues, is generally not deductible.
Do you have to send 1099s to your contractors?
Often, yes. The reporting threshold for most payments to contractors has been $600, and recent legislation raises it for payments made after 2025. Confirm the threshold for your year, and collect a Form W-9 before you pay.
Does it matter when you buy equipment, or when you start using it?
Both. Depreciation and expensing rules generally depend on when an asset is placed in service, meaning ready and available for use, not just when you pay. A purchase made in December but not used until January may fall in the wrong year.
Did you know?
Did you know?
Answers are general information based on federal rules and may not apply to your situation or state. Verify current figures and deadlines on irs.gov, and consult a qualified professional before acting.