The core distinction is where each type of payment lives in your chart of accounts and how it gets reported at tax time.

Employee expenses flow through payroll. This includes gross wages, employer payroll taxes like Social Security, Medicare, and state and federal unemployment, plus workers’ comp and any benefits you provide. These costs should be tracked in payroll-related accounts, and they get reported on W-2s at year end. Your payroll system handles most of the calculation, but your books need to reflect both the employee’s gross pay and the employer-side costs that come on top of it.

Contractor expenses are simpler from a bookkeeping standpoint. You pay a contractor for their work and record it to an expense account like “Contract Labor” or “Subcontractor Expense.” No taxes withheld, no benefits, no employer-side payroll tax. The contractor handles their own taxes. At year end, anyone you paid $600 or more gets a 1099-NEC, which is where clean tracking throughout the year pays off. Having accurate vendor records makes 1099 preparation straightforward instead of a last-minute scramble.

In QuickBooks Online, set up contractors as vendors. Every payment you make gets recorded as a bill or expense tied to that vendor name. This makes it easy to pull a report at year end showing exactly how much you paid each person. Employees should be set up through your payroll system, not as vendors. Mixing the two creates confusion in your reports and makes tax filing harder than it needs to be.

The most common mistake is lumping contractor payments and employee wages into the same account. When everything lands in a generic “labor” category, you lose visibility into what you’re actually spending on each type of worker. Your profit and loss statement becomes less useful because the numbers are blended together. And when tax time arrives, you or your accountant has to go back and untangle months of transactions that should have been separated from the start.

A few practical habits help keep things clean. Collect a W-9 from every contractor before you make the first payment. This gives you their legal name, business name, and tax ID number. Don’t wait until January to chase these down. It’s much harder to get a response from someone you haven’t worked with in months. For employees, make sure your payroll system is calculating employer-side taxes correctly and that those amounts show up as their own line items in your books. The employer portion of FICA and unemployment insurance are real costs that affect your bottom line.

If you work with both contractors and employees regularly, review your expense reports monthly. Make sure no contractor payments accidentally ended up in a payroll account and no employee reimbursements landed in contractor labor. A small business bookkeeping service can handle this ongoing review so your records stay accurate and nothing slips through. Catching a miscategorized payment in the same month takes a minute. Finding it in December while preparing year-end reports takes much longer and often leads to missed corrections.