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Updated July 2026 · 8 min read

This article was created with AI assistance.

Per Diem Nursing and Taxes: What Every Float Pool Nurse Should Know

Part of the Nurse Money Hub — taxes, self-employment income, and nurse financial planning in one map.

Per diem and float pool nursing can dramatically increase your hourly rate — but the tax treatment depends entirely on how you're classified. W-2 per diem nurses and 1099 per diem nurses have very different tax obligations. Getting this wrong costs nurses $3,000–$8,000 in either an unexpected April tax bill or in missed deductions.

The classification that matters most: If an agency pays you as a W-2 employee (with taxes withheld on your paystub), your tax filing is nearly identical to staff nursing. If they pay you on a 1099 (no tax withholding, you receive the full gross payment), you are self-employed and owe both sides of FICA — a 15.3% self-employment tax on top of income tax.

W-2 per diem vs 1099 per diem: the key differences

FeatureW-2 Per Diem1099 Per Diem / Independent Contractor
Who withholds taxesEmployer withholds FICA + federal/state income taxNobody — you owe it all
Self-employment taxOnly the employee's 7.65% FICA share15.3% SE tax (both sides)
Business deductionsLimited (most nurse expenses not deductible on W-2)Yes — scrubs, licensure, CME, mileage, home office
Quarterly estimated paymentsUsually not requiredRequired if you expect to owe $1,000+
Retirement account optionsEmployer's 403(b)/IRA onlySEP-IRA ($69,000 limit) or Solo 401(k)

The self-employment tax shock

The most common unpleasant surprise for newly 1099 nurses: the full SE tax. When you're a W-2 employee, your employer pays half of FICA (6.2% Social Security + 1.45% Medicare = 7.65%), and you pay the other half. As a 1099 contractor, you pay both sides — 15.3% on net self-employment income. On $60,000 of 1099 per diem income, SE tax is $9,180 before any federal or state income tax. Budget for this from your first payment.

Quarterly estimated taxes: the due dates

If you owe more than $1,000 in taxes for the year, the IRS requires quarterly estimated payments to avoid underpayment penalties. The 2026 due dates:

QuarterIncome PeriodPayment Due
Q1 2026Jan 1 – Mar 31April 15, 2026
Q2 2026Apr 1 – May 31June 16, 2026
Q3 2026Jun 1 – Aug 31September 15, 2026
Q4 2026Sep 1 – Dec 31January 15, 2027

Safe harbor rule: if you pay 100% of last year's tax liability through estimated payments (or 110% if last year's AGI exceeded $150,000), you avoid underpayment penalties regardless of what you actually owe.

Deductions 1099 nurses can take

As a self-employed nurse, the following are potentially deductible business expenses: professional license renewal fees, DEA registration fees, malpractice insurance premiums, nursing certifications (CCRN, CEN, etc.) required for your practice, scrubs and clinical uniforms (not street clothing), stethoscope and personal clinical equipment, CEU course fees, professional association dues, mileage between assignments (at the 2026 IRS rate of $0.70/mile), home office if used exclusively for per diem scheduling and charting, and health insurance premiums for self-employed nurses (above-the-line deduction).

The SEP-IRA advantage nobody tells you about: A 1099 nurse can contribute up to 25% of net self-employment income to a SEP-IRA, with a 2026 limit of $69,000. On $80,000 of 1099 income, that's a potential $20,000 pre-tax deduction — dramatically reducing SE tax and income tax in the same year. This is one of the most powerful tax reduction tools available to self-employed nurses. Opening a SEP-IRA takes about 15 minutes at Fidelity or Vanguard.
Track every deductible expense from day one: IRS audits for 1099 workers are more common than for W-2 employees, and recordkeeping is your protection. Our includes pre-built categories for all nursing-specific deductions, quarterly tax calculators, and a mileage log template.

Related: Travel Nurse Tax-Free Stipends, Agency vs Hospital Pay, 7 Nurse Side Hustles Over $50/Hour

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