Compare self-employment taxes, business deductions, and take-home pay to make informed employment decisions
This calculator provides a comprehensive comparison between W-2 employee and 1099 independent contractor tax obligations using current IRS tax brackets, Social Security wage bases, and California state tax rates.
FICA taxes 7.65% (6.2% Social Security + 1.45% Medicare) on wages up to the SS wage base ($176,100 for 2025; $168,600 for 2024). Pre-tax 401(k) and Section 125 (FSA, health) reduce the income base; the calculator applies the progressive federal brackets (10% to 37%) and California's nine progressive brackets (1% to 12.3%) plus 1% Behavioral Health Services Tax on California income over $1M. California does NOT conform to the federal standard deduction or to IRC 199A QBI; the CA pipeline uses its own standard deduction ($5,706 single/MFS; $11,412 MFJ/HOH/QSS for 2025).
Net SE income is gross minus business deductions. Self-employment tax = 15.3% (12.4% SS + 2.9% Medicare) on 92.35% of net earnings, mirroring the IRS Schedule SE math. Half of SE tax is deductible from AGI. QBI deduction (IRC 199A) up to 20% of qualified business income, subject to SSTB phase-out at $197,300/$247,300 (single) or $394,600/$494,600 (MFJ) for 2025. Above the upper threshold this calculator zeroes QBI conservatively for both SSTB and non-SSTB cases because it does not collect W-2 wages paid or qualified-property basis.
For 1099: SEP-IRA up to about 20% of net SE income after the SE-tax deduction (capped at $70,000 for 2025). Solo 401(k) allows employee contribution up to $23,500 plus employer (~20%) up to the same $70,000 combined limit.
Tax rates, brackets, and limits are sourced from IRS Revenue Procedures, the OBBBA (P.L. 119-21, July 2025) standard deduction figures, and California Franchise Tax Board publications. While this calculator provides accurate estimates based on the information you provide, individual circumstances vary, and you should consult a qualified tax professional for personalized advice.
When a company offers a choice between W-2 employment and 1099 contracting, use this calculator to determine the minimum 1099 rate needed to match your W-2 take-home pay. Many contractors underestimate the additional costs of self-employment and accept rates that actually reduce their net income. As a general rule, your 1099 rate should be 25-40% higher than the equivalent W-2 salary.
Convert both offers to after-tax income. Remember to factor in non-monetary benefits like health insurance quality, 401(k) matching, paid leave, and job security.
If you're considering leaving W-2 employment to start freelancing or consulting, this calculator helps you understand the tax implications before making the leap.
If you're already working as a 1099 contractor, model how different business expenses affect your tax burden. Experiment with home office, equipment, and retirement contributions to find the optimal tax strategy.
One significant advantage of 1099 status is access to retirement plans with higher contribution limits. Compare SEP-IRA or Solo 401(k) options against a W-2 401(k) with employer matching.
If you believe you've been misclassified as a 1099 contractor when you should be a W-2 employee, this calculator helps you understand the financial impact.
The IRS uses a three-category test: behavioral control (does the company direct how work is performed?), financial control (unreimbursed business expenses, investment, payment method, profit/loss potential), and type of relationship (written contracts, benefits, permanency, integration with the company's regular business).
While W-2 employees pay 7.65% and their employers pay a matching 7.65%, self-employed individuals pay the entire 15.3% themselves: 12.4% for Social Security (on income up to $176,100 in 2025) and 2.9% for Medicare. An additional 0.9% Medicare surtax applies to self-employment income exceeding $200,000 for single filers.
SE tax is calculated on 92.35% of net SE income, not the full amount. Formula: Net SE Income x 0.9235 x 0.153 = SE Tax. You can also deduct half the SE tax from AGI.
20% deduction on qualified business income for pass-through entities and sole proprietors. 2025 phase-out: single $197,300 to $247,300; MFJ $394,600 to $494,600. SSTBs (law, accounting, health, consulting, financial services) phase out entirely above the upper threshold.
Quarterly due dates: April 15, June 15, September 15, and January 15 of the following year. Required if expecting to owe $1,000 or more after withholding. Underpayment penalties calculated at the federal short-term rate plus 3 percentage points.
Under AB5, a worker is presumed to be an employee unless the hiring entity can prove all three factors: (A) free from control, (B) work performed outside the usual course of the hiring entity's business, (C) customarily engaged in an independently established trade.
Available only to self-employed individuals (the employee version was eliminated by TCJA from 2018-2025). Simplified method: $5 per square foot up to 300 square feet ($1,500 max). Regular method: actual expenses based on the business-use percentage. Space must be used regularly and exclusively for business.
SEP-IRA: about 20% of net SE income (max $70,000 for 2025). Solo 401(k): employee contributions up to $23,500 + employer up to about 20% of net income, with the same $70,000 combined max.
You need at least a 25-40% premium over the equivalent W-2 to break even after SE tax, lost benefits, and self-funded retirement.
Reserve 25-30% of every payment for quarterly estimated taxes in a separate account.
Every legitimate business expense reduces both income tax and SE tax. Common overlooked deductions: home office, internet/phone (business portion), professional development, mileage, software, professional liability insurance, bank fees.
SSTBs face complete phase-out above the upper threshold. The deduction is also limited by W-2 wages and qualified property at higher income levels.
Solo 401(k) or SEP-IRA can shelter up to $70,000 per year (2025). Even modest contributions save thousands in current-year tax.
California's AB5 imposes stricter classification standards than federal law. What qualifies under IRS rules may still be misclassification under California law.
Operating without a separate business bank account complicates expense tracking and increases audit risk.
The single most effective tax-reduction strategy. Solo 401(k) can shelter up to $70,000 from current-year tax for 2025.
Once net SE income exceeds approximately $80,000 to $100,000, electing S-corporation status may reduce overall tax burden by reclassifying part of income as distributions (not subject to SE tax).
Cash-basis contractors have flexibility in when income is recognized and expenses are deducted. Particularly valuable near tax-bracket thresholds or QBI phase-out ranges.
$5 per square foot up to 300 square feet ($1,500 max) is audit-proof and requires no expense tracking.
Self-employed health insurance is 100% deductible as an above-the-line adjustment to AGI. Cannot exceed net SE income; cannot be claimed if eligible for employer-subsidized coverage through a spouse's plan.
2025 standard mileage rate is $0.70 per business mile. 10,000 business miles = $7,000 deduction.
The safe-harbor rule allows paying 100% of last year's tax (110% if AGI exceeded $150,000) in equal quarterly installments to avoid penalty, even if income is growing.
Comprehensive answers to common questions about 1099 vs W-2 classification, taxes, and planning strategies.
W-2 employees work under employer control with taxes withheld automatically and receive benefits like health insurance, paid leave, and unemployment protection. The employer pays half of FICA (7.65%) and handles payroll. 1099 independent contractors control how they complete work, pay self-employment taxes quarterly at the full 15.3% rate, and receive no employer benefits, but can deduct business expenses and may access higher retirement contribution limits.
The IRS weighs three categories: behavioral control, financial control, and the type of relationship. No single factor is determinative.
A worker is presumed an employee unless the hiring entity proves ALL three: (A) free from control and direction, (B) work outside the usual course of the entity's business, (C) customarily engaged in an independently established trade or business of the same nature.
No. Classification is determined by the nature of the working relationship, not by agreement between the parties. Both federal law and California law strictly prohibit misclassification regardless of what the parties agree to.
1099 contractors pay 15.3% self-employment tax on net SE earnings, while W-2 employees only pay 7.65% because employers pay the other half. This adds 7.65% on income up to the SS wage base. Contractors can offset this through business deductions, the SE-tax deduction, and the QBI deduction.
IRC Section 199A allows a deduction of up to 20% of qualified business income. 2025 phase-out: single $197,300 to $247,300; MFJ $394,600 to $494,600. SSTBs face complete phase-out above the upper threshold.
As a general rule, 25-40% higher to account for SE tax, health insurance, retirement matching, paid time off, and other benefits.
You can deduct the employer-equivalent half of SE tax (50% of the total) from AGI. This is an above-the-line deduction that does not require itemizing.
Ordinary and necessary business expenses: home office, equipment and supplies, software/subscriptions, professional development, business travel and mileage ($0.70/mile for 2025), business-use phone/internet, professional services, business insurance, advertising, memberships and dues, and health insurance premiums (as an adjustment to income).
Simplified method: $5 per square foot up to 300 square feet ($1,500 max). Regular method: actual expenses x business-use percentage. Space must be used regularly and exclusively for business.
Yes, 100% deductible as an adjustment to AGI. Cannot exceed net SE income; cannot be claimed if eligible for employer-subsidized coverage through a spouse's plan.
April 15, June 15, September 15, and January 15 of the following year.
Safe harbors: 90% of this year's liability, OR 100% of last year's (110% if AGI exceeded $150,000). Penalty is waived if you owe less than $1,000 after withholding.
SEP-IRA: up to about 20% of net SE income (max $70,000 for 2025). Solo 401(k): employee + employer contributions up to the same $70,000 combined max. SIMPLE IRA, traditional IRA, and Roth IRA are also options.
Pre-tax contributions reduce AGI dollar-for-dollar. Employer (SEP-IRA / Solo 401(k)) contributions also reduce the QBI calculation base.
For workers: paying the employer FICA portion, losing unemployment, no workers' comp, no overtime, no benefits. For employers: back taxes plus penalties, FLSA liability, AB5 penalties of $5,000 to $25,000 per violation in California. The IRS Voluntary Classification Settlement Program allows prospective reclassification with reduced penalties.
File IRS Form SS-8 for an official status determination, file IRS Form 8919 with your return, file a wage claim with the California Labor Commissioner, or report to the California EDD. Consult an employment attorney about back wages and statutory penalties.
Legally possible but heavily scrutinized. The 1099 work must be genuinely different from and separate from the W-2 work. Same work paid two ways is a red flag for auditors.
Significantly fewer. Contractors are not covered by FLSA minimum wage and overtime, Title VII/ADA/ADEA in most circuits, unemployment insurance, workers' comp, FMLA, COBRA, WARN Act, or ERISA plan protections. Contractors retain protection under contract law and certain state-law protections.
If you are weighing a 1099 versus W-2 decision, suspect misclassification, or need a contractor agreement reviewed for California ABC compliance, I can review the engagement record, the working arrangement, and the proposed contract in a written memo. Email owner@terms.law with the documents and a description of how the work is actually performed.