One of the most common and costly mistakes US small business owners make is misclassifying workers. Treating an employee as an independent contractor — or the reverse — can trigger IRS audits, back taxes, penalties and interest. Here is how to get it right.
What Is the Difference?
A W-2 employee is someone whose work you control in terms of what they do and how they do it. You withhold federal and state income tax, Social Security and Medicare from their pay. You also pay the employer’s share of payroll taxes — 7.65% of their wages.
A 1099 contractor is someone who runs their own business and provides services to you. They control how and when they do the work. You pay them in full with no tax withholding and report payments of $600 or more on Form 1099-NEC at year end.
The IRS Three-Factor Test
The IRS uses three main factors to determine worker classification. Behavioural control asks whether you control how the worker does their job — the tools they use, the hours they work, the process they follow. Financial control asks whether you control the financial aspects of the work — whether they can work for other clients, whether they have their own investment in tools and equipment. The type of relationship asks whether there is a written contract, whether you provide benefits and whether the relationship is permanent or project-based.
No single factor is decisive. The IRS looks at the overall picture.
What Happens If You Misclassify?
If the IRS determines you misclassified an employee as a contractor, you can be liable for all unpaid payroll taxes going back to when the misclassification began, plus a 20% penalty on wages paid to the worker, plus interest. In serious cases, criminal penalties apply. The total liability can be significant — particularly for businesses that have used the same misclassified contractors for years.
Safe Harbour Rules
Section 530 of the Internal Revenue Code provides some protection if you consistently treated a worker as a contractor, filed the appropriate 1099 forms, and had a reasonable basis for doing so — such as industry practice or a prior IRS audit that did not flag the classification. This does not eliminate liability but can reduce penalties.
How to Fix a Misclassification
If you suspect you have misclassified workers, the IRS Voluntary Classification Settlement Program allows you to reclassify workers as employees and pay a reduced penalty — generally 10% of the employment taxes due for the most recent tax year. Acting proactively is always better than waiting for an audit.
1099 Filing Requirements
If you pay any contractor $600 or more during the calendar year for services, you must issue Form 1099-NEC by January 31 of the following year. Failure to file carries penalties of $60 to $310 per form depending on how late the filing is.
How Auxilio Can Help
We review worker classification for all new bookkeeping clients as part of onboarding, prepare and file 1099-NEC forms at year end and advise on reclassification if we identify potential issues. Getting this right from the start is far cheaper than correcting it after an IRS notice.
Book a free call to discuss your current contractor and employee setup.