The IRS uses a tiered penalty system based on how late your deposit is. Deposits 1 to 5 days late get a 2% penalty. 6 to 15 days late bumps it to 5%. More than 15 days late and you’re at 10%. If you still haven’t paid within 10 days of receiving your first IRS notice, the penalty jumps to 15%.

These percentages apply to the unpaid tax amount. On a $10,000 payroll tax deposit that’s three weeks late, you’re looking at $1,000 in penalties before interest even starts. Interest compounds daily on top of the penalty at the federal short-term rate plus 3%, adjusted quarterly.

The bigger risk is personal liability through the Trust Fund Recovery Penalty. Payroll taxes include money you withheld from employee paychecks for federal income tax and the employee portion of Social Security and Medicare. The IRS considers those trust funds because you collected them on behalf of the government. If the business doesn’t pay them, the IRS can pursue anyone responsible for the failure personally. That means business owners, officers, or even bookkeepers with authority over financial decisions can be held liable for 100% of the unpaid trust fund taxes. This liability doesn’t go away in bankruptcy and survives business closure.

Missouri adds its own penalties for late state withholding tax deposits. The state charges 5% of the tax due per month up to 25% maximum, plus interest on top of that.

Most businesses don’t get behind on payroll taxes on purpose. Cash flow gets tight and the thinking becomes “I’ll catch up next quarter.” That almost never happens. The hole gets deeper. The fix is treating payroll taxes like they’re not your money, because they’re not. The employee withholding portion belongs to the government the moment you deduct it from paychecks. Setting it aside in a separate account until the deposit is due keeps it from getting spent on something else.

A Mid-Missouri bookkeeper who handles payroll processing makes deposits on schedule based on your deposit frequency requirements. Semi-weekly or monthly schedules depend on your lookback period liability, and missing these deadlines repeatedly signals to the IRS that you might need additional attention.

If you’re already behind, the worst thing to do is ignore it. The IRS has installment agreement options and can sometimes abate penalties for reasonable cause. But you have to engage with them. Silence makes everything worse.