1099 Tax Planner for Nurses and Healthcare Workers

A 1099 shift pays you the whole rate and withholds nothing. If you also have a W-2 job, your paycheck withholding was set up for that job alone, so the tax on your side work has to come from somewhere: a bigger W-4 withholding, quarterly estimated payments, or a bill in April with a penalty on top. This planner works out all three from your whole-year numbers.

Pick the example closest to you, then replace the numbers with yours. Use your latest pay stub for withholding. Nothing you enter leaves this page.

How to use the answer

Set-aside: move that share of every 1099 payment into a separate savings account the day it lands. It’s the extra federal tax on your next dollar of 1099 profit, including self-employment tax and the qualified business income (QBI) deduction, plus the state rate you entered. If you’re in the 22% bracket, expect about 30% with the QBI deduction; the 35% rule of thumb in 1099 vs W-2 leaves that deduction out, so it builds in a cushion.

Raising your W-4 is usually the better fix. The IRS counts withholding as if it were paid evenly through the year, so extra withholding in November and December also patches the quarters you missed. On a new Form W-4, put the extra amount per paycheck in Step 4(c). An estimated payment in January only counts from January, so it closes the yearly gap but leaves any earlier shortfall.

My take: once the safe harbor is covered, stop. Withholding more than that is an interest-free loan to the IRS. Keep the rest of your set-aside in a high-yield savings account until April.

What the planner assumes

• 2026 federal rules: brackets and standard deductions from IRS Rev. Proc. 2025-32 ($16,100 single, $32,200 married filing jointly, $24,150 head of household), the $184,500 Social Security wage base, and the 0.9% Additional Medicare Tax above $200,000 single or head of household and $250,000 joint.
• Your 2026 tax is income tax plus self-employment tax plus Additional Medicare Tax, the total the penalty rules use. The 7.65% Social Security and Medicare taken from your W-2 pay isn’t part of it. Each employer withholds the 0.9% only on wages over $200,000 it pays you; the planner counts that as paid. It assumes one employer per person.
• Self-employment tax is 15.3% of 92.35% of your 1099 profit, with the 12.4% Social Security part only on wage-base room your W-2 pay leaves. Half of it is deducted before income tax.
• QBI deduction: 20% of your 1099 profit after half of self-employment tax and solo 401(k) contributions, capped at 20% of taxable income. Nursing, pharmacy, dentistry and other health work count as a “specified service” business, so above $201,750 of taxable income ($403,500 joint) the deduction shrinks, and past $276,750 ($553,500 joint) only a $400 minimum is left. That minimum is new for 2026 and needs at least $1,000 of QBI from work you actively do.
• Penalty rules (IRS Publication 505 and Form 2210, as of October 2026): no penalty if your 2026 tax minus withholding is under $1,000. Otherwise you need to have paid, by each due date, a quarter, half, three-quarters and all of the smaller of 90% of your 2026 tax or 100% of your 2025 tax (110% if your 2025 adjusted gross income was over $150,000). This uses the regular method, not the annualized income method on Form 2210 Schedule AI, which can help if most of your 1099 income came late in the year.
• Left out: credits, capital gains, the net investment income tax, itemized deductions, the self-employed health insurance deduction, state penalty rules, and the penalty amount itself. The married filing separately status isn’t supported.

FAQ

I’m an emergency physician, not a CPA, enrolled agent or attorney. This planner is an educational estimate, not tax advice. It leaves out parts of the tax code that may apply to you, and tax rules change. Check your numbers with a tax professional before you change your withholding or skip a payment.