Nobody is withholding tax from 1099 income, so set aside 20% to 30% of every payment, and more at six-figure incomes. Then check the safe harbor: if your payments cover last year's tax (110% if your income was over $150,000), you avoid the underpayment penalty. Your fourth estimated payment for 2026 is due January 15, 2027.
Who is this for?
Anyone who went from a paycheck to client payments in 2026: freelancers, 1099 contractors, independent contractors, sole proprietors and single-member LLC owners. The same rules apply to a new fractional executive or a consultant who left a W-2 job mid-year.
What changes when you go from W-2 to 1099?
Three things change at once:
- No one withholds tax. An employer takes federal income tax, Social Security and Medicare out of every paycheck. A client sends you the full amount.
- You pay both halves of Social Security and Medicare. Self-employment tax is 15.3% (12.4% Social Security, 2.9% Medicare) on 92.35% of your net profit. Social Security stops at the wage base, $184,500 for 2026, counting any W-2 wages you earned earlier in the year.
- You pay as you go. The IRS expects quarterly estimated payments if you will owe $1,000 or more for the year after withholding and credits.
How much should I set aside? A worked example
Say you started contracting in September and will earn $180,000 by December 31, with $6,000 of business expenses. Your profit is $174,000.
| Line | Amount |
|---|---|
| Profit | $174,000 |
| Subject to self-employment tax: 92.35% of profit | $160,689 |
| Self-employment tax: 15.3% | $24,585 |
| Federal income tax rate on top dollars, single filer | 24% once taxable income passes $105,700 |
| State income tax | Depends on your state |
Self-employment tax alone is about 14% of your profit. Federal income tax comes on top, at 24% on taxable income over $105,700 for a single filer in 2026, then 32% over $201,775 and 35% over $256,225. Add state tax if your state has one. That is why the usual 20% to 30% set-aside is a floor, not a ceiling, at this income: plan on the top of that range, and higher if your state taxes income or your income keeps growing. Our free Quarterly Tax Calculator gives you a number from your own figures.
Will I owe a penalty for not paying quarterly?
Maybe not. The underpayment penalty works on a safe harbor. You avoid it if your withholding plus estimated payments, paid on time, cover the smaller of:
- 90% of your 2026 tax, or
- 100% of your 2025 tax, or 110% if your 2025 adjusted gross income was over $150,000, or over $75,000 if married filing separately.
Three situations come up a lot in a first year:
- You had no tax liability last year. If your 2025 tax was zero, you were a US citizen or resident all year and 2025 was a full 12-month tax year, there is no underpayment penalty for 2026. You still owe the full tax in April.
- You had a W-2 job earlier this year. Withholding counts as paid evenly through the year, so a big W-2 withholding total from January to August can cover most of last year's tax on its own.
- Your income arrived late in the year. If you earned most of it from September on, the annualized income installment method on Form 2210 can reduce or remove the penalty for the earlier quarters, because it measures what you owed based on when you earned it.
The penalty works like interest: currently 7% a year on each quarter's shortfall, until you pay it or until the April filing deadline, whichever comes first. It is usually small, and it is easy to avoid.
What should I pay by January 15, 2027?
Your fourth-quarter estimate for 2026 is due Friday, January 15, 2027. Pay at least enough to reach your safe harbor number, and ideally enough to cover what you really owe, so April is not a surprise. You can skip the January 15 payment only if you file your full 2026 return and pay everything by February 1, 2027, which is rarely realistic in a first year.
Pay through IRS Direct Pay or your IRS online account, and keep the confirmation. Most states with an income tax have their own estimated payments and dates, so check your state too.
Do I need a separate bank account?
Yes, if this is more than a short project. A separate account makes it obvious which deposits are business income and which expenses are deductible. It is also the easiest place to keep your tax set-aside: move 20% to 30% of every payment there the day it lands. About 4 in 10 Sumly users signed up without a separate business account. Sorting a year of mixed transactions after the fact takes hours you could spend on clients.
How do I make sure every dollar of income gets reported?
Don't rely on the forms. For payments made in 2026, a client sends a Form 1099-NEC only if it paid you $2,000 or more, and payments by card or payment app may show up on a Form 1099-K instead, or not at all. You owe tax on all of it either way. Keep a list of every client and every way they pay you, and reconcile it against your bank deposits each month.
Which deductions should I set up now?
- Home office. If you work from a dedicated space at home, compare the simplified method with the actual expense method. In high-rent cities, the actual method is often worth far more.
- Health insurance. If you pay for your own coverage and are not eligible for an employer plan, premiums are generally deductible.
- Retirement. A Solo 401(k) or SEP IRA can shelter a large share of a high first-year income. For 2026, the employee deferral limit is $24,500, and total contributions can reach $72,000. Deadlines differ by account type, so ask your tax pro before December 31.
- Equipment and software you buy for the business.
What are the most common first-year mistakes?
- Spending the whole payment because no tax came out of it.
- Waiting until April to find out what you owe.
- Mixing business and personal money in one account.
- Assuming the 1099s will tell you your income.
- Missing the safe harbor by a small amount, when one January payment would have covered it.
FAQ
Do I have to pay quarterly taxes in my first year of 1099 income?
If you expect to owe $1,000 or more after withholding and credits, the IRS expects quarterly payments. If you had no tax liability last year, though, you won't owe an underpayment penalty for this year.
How much tax will I owe on $200,000 of 1099 income?
It depends on expenses, deductions and your state. Self-employment tax alone is about $28,000 on $200,000 of profit, before federal and state income tax. Run your numbers in a calculator or with a tax pro.
When is the fourth quarterly payment for 2026 due?
January 15, 2027. You can skip it only if you file your 2026 return and pay the balance by February 1, 2027.
What if I can't pay the full amount by January 15?
Pay what you can. The penalty is interest on the shortfall for each day it is unpaid, so a smaller payment still cuts it.
Do I need an LLC?
Not to pay taxes correctly. A single-member LLC is taxed like a sole proprietor by default. It can help with liability, and an S-Corp election is a separate question for later.
What does Sumly cost?
Strive is $49/mo. Thrive is $149/mo and adds payroll and a dedicated Tax Pro. Tax filing by a Sumly Tax Pro is available as an add-on: $499 for a Schedule C return or $699 for an S-Corp.
Sources: Form 1040-ES (2026) (IRS), Instructions for Form 2210 (IRS), Self-employment tax (IRS), Tax inflation adjustments for 2026 (IRS), 401(k) limit increases to $24,500 for 2026 (IRS), COLA increases for dollar limitations (IRS) and Interest rates for the fourth quarter of 2026 (IRS). Tax situations vary, so confirm specifics with your tax professional.
Start your first year with a system
Sumly connects your accounts, sorts business from personal, and keeps a running quarterly estimate as payments land, with a real Tax Pro to check your safe harbor before January 15.
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