Estimated Quarterly Tax Payments: Who Needs to Pay and When?
Tax Day gets most of the attention, but business owners and self-employed individuals have another important tax responsibility throughout the year: estimated tax payments.
The U.S. federal tax system generally operates on a pay-as-you-go basis. This means taxpayers are expected to pay taxes as income is earned rather than waiting until the annual tax return is filed.
For business owners, self-employed individuals, investors, and others who receive income without enough tax withholding, estimated payments may be necessary to avoid an underpayment penalty.
What Are Estimated Tax Payments?
Estimated tax payments are periodic payments made during the year toward taxes you expect to owe when you file your federal income tax return.
For self-employed individuals, estimated payments can cover both income tax and self-employment tax, which includes Social Security and Medicare taxes. (Serviço de Receita Interna)
The amount a taxpayer needs to pay depends on expected income, deductions, credits, withholding, and other factors.
Who Needs to Make Estimated Tax Payments?
Estimated tax rules can apply to individuals who receive income that is not subject to sufficient withholding.
This commonly includes:
· Sole proprietors
· Independent contractors
· Freelancers
· Partners in partnerships
· S corporation shareholders
· Individuals with significant investment or capital gains income
· Other taxpayers who do not have enough federal tax withholding
Generally, an individual may need to make estimated tax payments if they expect to owe at least $1,000 in federal tax after subtracting withholding and refundable credits, and their withholding and credits are expected to be less than the required percentage of their tax liability. (Serviço de Receita Interna)
For most taxpayers, the general safe-harbor calculation is based on paying at least the smaller of:
· 90% of the current year's expected tax, or
· 100% of the previous year's tax liability
Higher-income taxpayers generally must use 110% of the prior year's tax instead of 100% when the applicable adjusted gross income threshold is exceeded. (Serviço de Receita Interna)
There are special rules for certain taxpayers, including farmers, fishermen, and some individuals with unusual tax situations.
What About Corporations?
Corporations have different estimated-tax rules.
Generally, a corporation must make estimated income tax payments if it expects to owe $500 or more in tax for the tax year. (Serviço de Receita Interna)
Corporate estimated payments are generally due on the 15th day of the 4th, 6th, 9th, and 12th months of the corporation's tax year. (Serviço de Receita Interna)
This is different from the individual estimated-tax schedule.
For example, a calendar-year C corporation generally follows the corporate estimated-tax schedule based on its January–December tax year.
When Are Individual Estimated Tax Payments Due?
For individuals using a calendar tax year, estimated tax payments are generally due four times a year:
First payment: April 15
Second payment: June 15
Third payment: September 15
Fourth payment: January 15 of the following year
For the 2026 tax year, the IRS lists the payment dates as April 15, June 15, September 15, 2026, and January 15, 2027. (Serviço de Receita Interna)
If a payment deadline falls on a Saturday, Sunday, or legal holiday, the payment generally moves to the next business day. (Serviço de Receita Interna)
These dates apply to the standard calendar-year schedule. Taxpayers using a fiscal year may have different payment dates.
How Do You Calculate Estimated Tax Payments?
Calculating estimated taxes requires an estimate of your total tax liability for the year.
You may need to consider:
· Expected business income
· Self-employment income
· Wages and other income
· Investment income
· Capital gains
· Business deductions
· Tax credits
· Self-employment tax
· Federal income tax withholding
· Estimated payments already made
Individuals can use Form 1040-ES, Estimated Tax for Individuals, to calculate and make estimated payments. The form includes a worksheet designed to help taxpayers determine the amount they may need to pay. (Serviço de Receita Interna)
Your estimated income can change during the year. If your business earns substantially more or less than expected, you may need to recalculate your remaining payments.
How Do You Make Estimated Tax Payments?
Taxpayers have several ways to make federal estimated tax payments.
Individuals can generally pay through their IRS online account, IRS Direct Pay, or other IRS-approved payment methods. Estimated payments can also be made using the payment instructions associated with Form 1040-ES. (Serviço de Receita Interna)
The important point is to make sure the payment is properly credited to the correct taxpayer and tax year.
What Happens If You Don't Pay Enough?
If you were required to make estimated tax payments but did not pay enough during the year, you may owe an underpayment of estimated tax penalty.
The penalty is not necessarily based simply on the amount still owed when you file your return. The IRS generally considers how much tax should have been paid during each payment period and when the required amount was actually paid.
As a result, a taxpayer could receive a penalty even if the entire remaining balance is paid when the annual tax return is filed. (Serviço de Receita Interna)
There are exceptions and special rules that may reduce or eliminate the penalty in qualifying situations.
Don't Confuse Estimated Taxes With Payroll Tax Payments
Estimated income tax payments are different from an employer's payroll tax deposits.
For example, an employer may have federal income tax withholding, Social Security and Medicare taxes, and other employment tax responsibilities. Those amounts generally follow separate deposit and reporting rules.
Similarly, Form 941 is used to report certain employment taxes; it is not the form used by an individual business owner to make personal estimated income tax payments.
Understanding the difference is important because a business can have both estimated income tax responsibilities and separate payroll tax obligations.
Plan Estimated Payments Before the Deadline
For business owners and self-employed individuals, estimated taxes should be part of regular financial planning rather than something addressed only at the end of the year.
Reviewing income throughout the year can help you adjust estimated payments when your business grows, income decreases, or your financial situation changes.
If you're unsure whether you need to make estimated payments or how much to pay, ContNow Tax Preparation LLC can help review your income, prior-year tax information, deductions, and projected tax liability so you can better understand your estimated federal tax obligations.
Proper planning can help reduce the risk of an unexpected tax bill and potential underpayment penalties when you file your annual return.
Do you have any other questions? Send us an email at 📧 info@contnowtax.com and we’ll get back to you as soon as possible.
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