This question shows up a lot, and the honest answer is "more than you think," because gross wages are only part of what payroll actually costs. Let's break down the real number, then talk about how big a buffer to hold.
This is educational content, not financial advice — for a reserve target tailored to your business, talk to your bookkeeper or CPA.
Payroll costs more than the paychecks
The amount that leaves your account each pay period is bigger than the sum of the net checks. Plan for:
- Gross wages — not net. The withholding you take from employees still leaves your account; it just goes to the government instead of the employee.
- Employer-side payroll taxes — your share of Social Security and Medicare (7.65%), plus federal and state unemployment tax.
- Workers' comp premiums.
- Benefits you contribute to — health, retirement match, and so on.
- Payroll-service fees if you use a provider.
A common rule of thumb: the true cost of an employee runs roughly 1.25–1.35× their gross wages once employer taxes and benefits are included. So if gross payroll is $10,000 a period, plan closer to $12,500–$13,500 leaving your accounts.
Don't forget the tax liability you're holding
The income tax, Social Security, and Medicare you withhold from employees isn't your money — you're holding it in trust until you deposit it with the IRS. The most dangerous payroll cash mistake is spending those withheld funds on something else and coming up short at deposit time. Treat withheld payroll taxes as already spent the moment you run payroll.
How big a payroll reserve should you hold?
Beyond covering the next run, a buffer protects you when revenue is lumpy. A reasonable framework:
- Minimum: enough to cover the next full payroll run (fully loaded) plus the associated tax deposit — at all times, no exceptions.
- Comfortable: two to three payroll cycles of fully loaded cost set aside, so a slow month or a late-paying customer never threatens payday.
- Seasonal businesses: more, sized to your slowest stretch — build the reserve during peak months to carry the lean ones.
This connects to your broader cash position — see how much cash a business should keep for overall reserves, and cash flow management for keeping the timing smooth.
How clean books make this easy
You can only manage a payroll reserve if you can see your numbers. Accurate books tell you your true per-period payroll cost, your upcoming tax deposits, and your real cash position — which is the difference between confidently making payroll and hoping the deposit clears. That's a core part of our payroll support.
Frequently asked questions
Gross, plus employer taxes — not net. The withholding you deduct from employees still leaves your accounts; it goes to the government. Plan for roughly 1.25–1.35× gross wages once employer taxes and benefits are added.
At a minimum, always hold enough for the next full run plus its tax deposit. A more comfortable target is two to three payroll cycles set aside, and more if your revenue is seasonal.
Withheld taxes are held in trust for the IRS, not operating cash. Spending them and coming up short at deposit time can trigger significant penalties. Treat them as already gone the moment payroll runs.
Because the employer pays its own share of Social Security and Medicare, unemployment taxes, workers' comp, and any benefits — on top of gross wages. Those add roughly 25–35% over the wages themselves.
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This post is educational content, not legal or tax advice. For your specific situation, consult a qualified attorney or CPA.