How Much Should a Freelancer Set Aside for Quarterly Taxes?
Updated July 10, 2026 · SmartRates Editorial Team
⚡ In short
Freelance and self-employment income is subject to both federal income tax and self-employment tax (Social Security and Medicare, currently 15.3% on net self-employment earnings up to the Social Security wage base, with the Medicare portion continuing above it), and because no employer withholds tax automatically, freelancers generally make quarterly estimated payments to the IRS covering both taxes to avoid an underpayment penalty.
📌 Key facts
- Self-employment tax is currently 15.3% of net self-employment earnings (12.4% Social Security up to the annual wage base, plus 2.9% Medicare with no upper limit)
- Self-employed individuals can deduct half of the self-employment tax paid when calculating adjusted gross income
- Federal estimated tax payments are generally due four times a year, in mid-April, mid-June, mid-September, and mid-January of the following year
- The IRS may assess an underpayment penalty if withholding and estimated payments together fall short of a required threshold during the year
🏛️ Official sources
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Estimate combined income and self-employment tax on freelance earnings.
What self-employment tax specifically covers
Self-employment tax funds the same Social Security and Medicare programs that payroll (FICA) tax funds for a traditional employee, but a self-employed individual is responsible for both the employee and employer portions combined, which is why the self-employment tax rate (15.3%) is roughly double the employee-only payroll tax rate a W-2 worker sees withheld.
How self-employment tax is calculated
Self-employment tax is calculated on net self-employment earnings (gross self-employment income minus business expenses) using Schedule SE — the 12.4% Social Security portion applies up to the annual Social Security wage base (an amount set and adjusted annually by the SSA), while the 2.9% Medicare portion applies to all net self-employment earnings with no upper limit.
The deduction for half of self-employment tax paid
Self-employed individuals can deduct half of the self-employment tax paid as an adjustment to income when calculating adjusted gross income (AGI), which mirrors how an employer's half of FICA tax isn't counted as income to a traditional employee — this deduction reduces the income base used for regular income tax, though it does not reduce the self-employment tax itself.
How income tax is calculated on top of self-employment tax
In addition to self-employment tax, net self-employment income is also subject to regular federal income tax at the individual's applicable tax bracket, and often state income tax as well — meaning the total amount to set aside covers both the flat self-employment tax rate and the individual's marginal income tax rate combined.
Why quarterly estimated payments are required
Because no employer withholds tax from freelance or self-employment income throughout the year, the IRS generally requires quarterly estimated tax payments to approximate what withholding would have covered for a traditional employee — these payments are due four times a year on set dates, roughly mid-April, mid-June, mid-September, and mid-January of the following year.
Estimating the total percentage to set aside
Because self-employment tax (15.3% on net earnings, with adjustments) combines with individual income tax at the applicable bracket, freelancers commonly set aside a combined percentage of gross self-employment income to cover both — the specific percentage that's actually sufficient varies by individual income level, deductions, and state tax rate, so a general estimate should be checked against the individual's specific tax situation using IRS worksheets or a tax professional.
How business expense deductions reduce the taxable base
Legitimate, documented business expenses reduce net self-employment earnings before either self-employment tax or income tax is calculated, which is why accurate expense tracking and bookkeeping throughout the year directly affects how much tax is ultimately owed, not just the record for filing purposes.
The underpayment penalty and how it's avoided
The IRS can assess an underpayment penalty if total withholding and estimated payments during the year fall short of a required safe-harbor threshold, generally based on either a percentage of the current year's tax liability or matching the prior year's total tax liability — making estimated payments that meet one of these safe-harbor thresholds is the standard way this penalty is avoided.
Where to keep set-aside tax funds
Keeping estimated tax funds in a separate savings account from operating funds is a commonly described practice that prevents the set-aside amount from being inadvertently spent on business or personal expenses before the quarterly payment is due, similar in structure to how a sinking fund is kept separate for a planned future expense.
How this differs for an LLC or S-corporation structure
A freelancer operating as a sole proprietor pays self-employment tax on all net business income, while a different business structure such as an S-corporation election can change how income is split between wages (subject to payroll tax) and distributions (not subject to self-employment tax), which is a structural decision separate from the basic quarterly estimated tax mechanics described here.
Frequently Asked Questions
What is the current self-employment tax rate?+
15.3% of net self-employment earnings — 12.4% for Social Security up to the annual wage base, plus 2.9% for Medicare with no income limit.
Can any portion of self-employment tax be deducted?+
Yes — half of the self-employment tax paid can be deducted as an adjustment to income when calculating adjusted gross income.
How often are estimated tax payments due?+
Generally four times a year, with due dates roughly in mid-April, mid-June, mid-September, and mid-January of the following year.
What happens if estimated payments fall short during the year?+
The IRS can assess an underpayment penalty if withholding and estimated payments together fall below a required safe-harbor threshold for the year.
Do business expenses reduce the amount subject to self-employment tax?+
Yes — self-employment tax and income tax are both calculated on net self-employment earnings, after deducting legitimate business expenses from gross income.
Does an LLC change how self-employment tax is calculated?+
A default single-member LLC is taxed the same as a sole proprietorship for this purpose, though an S-corporation election can change how income is split between wages and distributions, affecting the self-employment tax calculation.
Is there a way to estimate quarterly payments without a tax professional?+
The IRS provides Form 1040-ES with a worksheet for self-calculating quarterly estimated payments, though a tax professional can help for more complex income situations.