If you’re self-employed, running a small business, or making extra income outside of a W-2 job, there’s one phrase you’ve probably heard (and maybe dreaded): quarterly taxes.

Unlike traditional employees, who have taxes withheld automatically from each paycheck, business owners and freelancers are responsible for calculating and paying their own taxes throughout the year. The IRS doesn’t want to wait until April 15 to get its money—so that’s where quarterly estimated tax payments come in.

Let’s break it down.

What Are Quarterly Taxes?

Quarterly taxes are estimated tax payments you send to the IRS (and sometimes your state) four times a year. These payments cover:

• Income tax (based on your earnings)

• Self-employment tax (covering Social Security and Medicare contributions)

• Any other taxes tied to your income

Essentially, they’re a way of pre-paying your tax bill in installments.

Who Needs to Pay Them?

You’re generally required to pay quarterly taxes if both apply:

1. You expect to owe at least $1,000 in taxes for the year (after subtracting withholding and credits).

2. Your income doesn’t have enough tax automatically withheld (think freelancers, contractors, small business owners, investors).

Examples:

• A freelance graphic designer making $60,000 a year.

• A small e-commerce shop owner.

• A rideshare driver with no taxes withheld from payouts.

When Are Quarterly Taxes Due?

The IRS sets four payment deadlines each year:

• April 15 – for income earned January–March

• June 15 – for income earned April–May

• September 15 – for income earned June–August

• January 15 (next year) – for income earned September–December

If the date falls on a weekend or holiday, it usually shifts to the next business day.

How to Calculate Your Quarterly Taxes

There are a couple of approaches:

• Safe Harbor Method: Pay at least 100% of last year’s tax bill (110% if your income is high). This helps you avoid penalties even if your income changes.

• Estimate Method: Calculate your actual expected income and tax liability for the year, then divide by four.

Tools that can help:

• IRS Form 1040-ES (includes worksheets)

• Accounting software like QuickBooks or Wave

• A tax professional (especially if your income fluctuates a lot)

How to Pay

You can pay quarterly taxes through:

• IRS Direct Pay (bank account transfer)

• Electronic Federal Tax Payment System (EFTPS)

• Credit/debit card payments (fees apply)

• Paper check and voucher (old-school, but still accepted)

Why It Matters

Skipping or underpaying quarterly taxes can lead to:

• Penalties and interest (even if you pay in full at year-end)

• A huge, surprise tax bill come April

• Extra stress you just don’t need

Paying quarterly helps spread the tax burden across the year and keeps you in the IRS’s good graces.

Pro Tips

• Set aside 25–30% of every payment you receive into a tax savings account.

• Mark the deadlines on your calendar so they don’t sneak up on you.

• Check state rules—many states require their own quarterly estimated payments.

• Recalculate mid-year if your income changes significantly.

Bottom Line

Quarterly taxes may sound intimidating, but they’re really just about staying on top of your earnings and sending in payments throughout the year. By planning ahead, setting aside money regularly, and using the right tools, you’ll avoid penalties—and keep tax season much less stressful.