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IRS Penalty Calculator

Estimate IRS penalties for late filing, late payment, or underpayment of estimated taxes based on the amount owed and how many days past the deadline you are. Helpful for taxpayers deciding whether to file for an extension or pay immediately.

Tax Amount Owed ($)

Days Late (days)

Penalty Type

Reasonable Cause Expected

Fill in the required fields to see your result.

Taxes

Payroll Tax Calculator

Compute the combined Social Security, Medicare, and FUTA unemployment taxes owed on an employee's wages after pre-tax contributions. Essential for employers running payroll or freelancers verifying withholding.

Gross Wages ($)

Pre-tax Contributions ($)

Fill in the required fields to see your result.

Key differences

	IRS Penalty Calculator	Payroll Tax Calculator
Category	Taxes	Taxes
Inputs required	4	2
Result	Total IRS Penalties ($)	Total Payroll Taxes ($)
What it does	Estimate IRS penalties for late filing, late payment, or underpayment of estimated taxes based on the amount owed and how many days past the deadline you are. Helpful for taxpayers deciding whether to file for an extension or pay immediately.	Compute the combined Social Security, Medicare, and FUTA unemployment taxes owed on an employee's wages after pre-tax contributions. Essential for employers running payroll or freelancers verifying withholding.