When are quarterly taxes due? Deadlines, math, and how to pay

You moved from a W-2 job to freelancing, or you started a business, and someone mentioned you need to pay your taxes quarterly. The first deadline is approaching, you're not sure how much to send, and you're not sure whether you'll owe a penalty if you skip it. That's the everyday version of the quarterly estimated tax question, and the answer is more procedural than analytical.

This guide walks through what quarterly estimated taxes are, who has to pay them, when the four deadlines fall, how to calculate what you owe, how to actually send the money to the IRS, and how to organize your banking so the money is already set aside when each due date hits. The work is mostly habit; the article shows you the habit.

Key takeaways

• Quarterly estimated taxes are how the IRS collects income tax from anyone without employer withholding: contractors, sole proprietors, partners, S-corp owners, LLC owners, and anyone with significant non-wage income.

• Payments are due four times a year on April 15, June 15, September 15, and January 15 of the following year.

• Calculating the amount is straightforward; the harder part is having the money set aside on each deadline. The fix is moving a percentage of every payment into a dedicated tax-savings account as money comes in.

What are quarterly estimated taxes?

Quarterly estimated taxes are pre-payments of federal income tax (and self-employment tax, where applicable) made four times a year by people whose income isn't subject to employer withholding. The IRS uses them to keep tax collection roughly in step with when income is earned, instead of waiting until a single April filing.

If you're a W-2 employee, your employer withholds income tax, Social Security, and Medicare from each paycheck and sends those amounts to the IRS on your behalf. You never deal with quarterly payments because the withholding handles it. If you earn income outside of W-2 wages (freelance work, contract income, S-corp distributions, partnership income, significant investment income), there's no employer doing the withholding. Quarterly estimated taxes fill that gap.

If you're not sure whether you should be set up as a 1099 contractor or a W-2 employee in the first place, that's a different question with its own rules. See our guide on 1099 vs. W-2 worker classification for the full breakdown.

Who needs to pay quarterly estimated taxes?

The IRS rule is straightforward: you generally need to make estimated tax payments if you expect to owe at least $1,000 in federal tax after subtracting any withholding and refundable credits, and your withholding does not cover at least 90 percent of this year's tax or 100 percent of last year's tax (110 percent if your prior-year adjusted gross income was over $150,000). For most people without W-2 withholding, the $1,000 threshold is the relevant trigger.

In practice, you almost certainly need to pay quarterly estimated taxes if you are:

• A 1099 contractor or freelancer with no W-2 income or withholding

• A sole proprietor or single-member LLC owner taking net income from the business

• A partner in a partnership receiving distributions and a share of business income

• An S-corp shareholder-employee where your W-2 withholding doesn't cover all of your tax liability (which is common when you also take distributions)

• Anyone with significant non-wage income, like investment income, rental income, or large royalties

If you have W-2 income and a side hustle, you can sometimes adjust your W-2 withholding to cover the side-hustle taxes and skip quarterly payments. Otherwise, the quarterly route is the right one.

When are quarterly taxes due?

Federal quarterly estimated tax payments are due four times a year. The official IRS schedule for the 2026 tax year:

If a deadline falls on a weekend or federal holiday, it shifts to the next business day. The fourth quarter's deadline lands in the following calendar year, which trips up first-time filers; the payment for income earned in the last four months of the tax year is due about two weeks into January.

Most US states with an income tax also require quarterly estimated payments, often (but not always) aligned with the federal schedule. State rules and deadlines vary; check your state tax agency for the specific schedule that applies to your business. States without a broad-based income tax (Alaska, Florida, Nevada, New Hampshire on wages, South Dakota, Tennessee, Texas, Washington, and Wyoming) generally don't require state-level estimated payments on wage or business income, though some have other business-tax filings on different schedules.

How to calculate your quarterly estimated tax payment

There are three reasonable ways to size each quarterly payment. They differ in accuracy and effort, and most small business owners use a blend.

• Prior-year safe harbor. Take your total federal tax from last year, divide by four, and pay that amount each quarter. If your adjusted gross income last year was over $150,000, use 110 percent of last year's tax instead of 100 percent. This method protects you from underpayment penalties even if you make significantly more this year. It's the simplest method and the one most accountants recommend for variable-income businesses.

• Current-year estimate. Project your total income and deductions for the current year, calculate the tax, and pay 90 percent of that figure across the four quarters. More accurate if your income is steady or you can forecast confidently, but requires more guesswork in mid-year quarters.

• Annualized income method. Calculate each quarter's payment based on actual income earned through that point in the year, using IRS Form 2210 Schedule AI. Most accurate for businesses with uneven income (heavy revenue in some quarters, light in others). More record-keeping; usually worth it for seasonal businesses.

For most small businesses, the prior-year safe harbor is the easiest path because it removes the projection step. Worked example: a freelance designer paid $14,400 in federal tax last year (AGI under $150,000). The quarterly safe-harbor payment is $14,400 divided by 4, or $3,600 per quarter. Pay that amount on each of the four deadlines and the IRS won't charge an underpayment penalty regardless of whether this year ends up higher or lower.

A common simplification: many small business owners and freelancers set aside a flat percentage of every customer payment. Industry-typical guidance suggests 25 to 30 percent of net business income as of publication, depending on tax bracket and self-employment tax exposure. The exact percentage varies; the discipline of setting it aside as money arrives is what matters most.

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How to actually pay quarterly taxes

The IRS accepts quarterly estimated payments through several channels. Each is free or low-cost; the differences are convenience and confirmation speed.

• IRS Direct Pay. A free online tool at irs.gov that lets you pay directly from a checking or savings account. No account or registration required. Confirmation is immediate. The most common choice for first-time filers.

• EFTPS (Electronic Federal Tax Payment System). A free IRS system that requires a one-time enrollment but lets you schedule payments in advance, view payment history, and handle multiple tax types. Better for business owners who pay multiple types of federal tax. Enrollment takes about a week because the IRS mails a PIN.

• Mail with Form 1040-ES voucher. A check or money order plus the relevant 1040-ES voucher mailed to the IRS address for your state. Older method, slower confirmation, but still accepted.

• IRS2Go mobile app. The IRS's mobile app accepts payments through Direct Pay. Useful for paying on deadline day from a phone.

• Credit or debit card. Accepted through IRS-approved third-party processors. The processors charge a fee (typically 1.85 to 1.99 percent of the payment). Worth it only for the rewards-points math; otherwise Direct Pay is simpler.

State estimated payments are separate. Each state with income tax has its own website and process; check your state revenue agency for the specifics.

What happens if you miss a quarterly payment?

The IRS charges an underpayment penalty when you owe more than $1,000 at year-end and didn't meet one of the safe-harbor rules. The penalty is calculated as interest on the underpayment for the period between when each quarterly payment was due and when you eventually paid it.

The penalty rate is set quarterly by the IRS and tracks short-term federal interest rates plus a margin. It has typically been in the 7 to 8 percent annualized range in recent quarters as of publication, but the rate is reset by the IRS each quarter and may move with short-term rates. The exact rate for your situation depends on which quarter the underpayment falls in and how long it remained unpaid; IRS Form 2210 walks through the calculation.

Missing one quarterly payment is not a crisis. The penalty is interest-style (a small percentage of the underpayment for the months it was outstanding), not a flat fine. The fix is to send the missed payment as soon as you realize, then continue with the remaining scheduled payments. If you've missed multiple quarters and the underpayment is significant, talk to a tax professional about the safe-harbor and annualized methods to limit penalty exposure on next year's return.

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How to set aside money for quarterly taxes without thinking about it

Calculating the right quarterly payment is the easy part. Having the money on hand four times a year is the hard part, especially for businesses with variable income. The operational habit that solves this is the simplest possible: move a percentage of every payment into a dedicated tax-savings account as the money comes in.

Three components make it work:

• A dedicated tax-savings account, separate from your operating account. When tax money sits in the operating account, it gets spent without anyone meaning to. A separate account, ideally a sub-account of your business checking, makes the tax money psychologically and operationally invisible to day-to-day spending decisions.

• An automatic percentage transfer when customer payments arrive. The percentage depends on your tax situation; 25 to 30 percent of net business income is a common starting point as of publication. Adjust based on your actual marginal rate after the first year of data.

• A quarterly true-up. Two weeks before each due date, check that the balance in the tax-savings account matches the planned quarterly payment. Adjust the transfer percentage for the next quarter if you've over- or under-saved.

Done this way, each quarterly tax payment is a transfer from one account to another, not a scramble to find money. The discipline is in the automation, not in the math.

How Bluevine helps with quarterly tax planning

Bluevine Business Checking is built for this exact workflow. A few features make the tax-savings sub-account approach simple to set up:

• Sub-accounts on the Standard plan¹. Up to five sub-accounts, each with its own dedicated account number, included with the no-monthly-fee Standard plan. A common use is to set one sub-account aside specifically for tax savings, separate from your operating cash, payroll funding, and any other categories.

• Direct QuickBooks Online integration. Income transactions sync to your accounting books automatically. When you sit down to calculate your quarterly payment, year-to-date business income is one screen away rather than a reconciliation project.

• Real-time transaction visibility. Every transaction appears in the dashboard as it posts, not at the end of a 30-day statement cycle. Checking mid-quarter income before each due date is fast.

• No-monthly-fee Standard plan¹. The tax-savings sub-account doesn't cost anything to maintain, so the entire system has no recurring expense to compete against the tax savings it's protecting.

The bottom line

Quarterly estimated taxes are simple in concept and procedural in execution. Pay throughout the year so you don't owe a giant bill in April plus a penalty. Use the prior-year safe harbor if your income varies. Pay through IRS Direct Pay or EFTPS for free, scheduled payments. Most importantly: set aside the money as it comes in, into a dedicated account, so each quarterly deadline is a transfer rather than a search. Get the operational habit right and the tax-planning question stops being stressful.

Set up a tax-savings sub-account today.

Open a Bluevine Business Checking account with no monthly fee on the Standard plan¹ and set up a dedicated sub-account for quarterly tax savings. Each sub-account has its own account number, so you can automate transfers from your main account as customer payments arrive.

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