Going 1099: The Tax Math a Tech Misses

Why this matters

A shop offers to "bring you on as a 1099" at a higher hourly rate, and the number sounds like a raise. Usually it is not. As an independent contractor you pay both halves of payroll tax, you pay your own tax in advance four times a year, you buy what the employer used to provide, and you lose protections that never showed up on a stub. Techs who do the math in April instead of before they sign end up with a tax bill they did not save for. This card is the math, done before you sign.

This is general information, not personal financial or tax advice. A tax preparer who works with self-employed tradespeople is worth one paid hour before you accept.

What changes on the day you go 1099

As a W-2 employee, the shop withholds income tax from every check, withholds your share of Social Security and Medicare (FICA, the Federal Insurance Contributions Act tax, 7.65 percent of wages), and pays a matching 7.65 percent you never see. It also pays for workers' comp, state unemployment insurance, and whatever benefits it offers.

As a 1099 contractor (named for Form 1099-NEC, the form a business files to report what it paid you), nobody withholds anything. The shop sends the gross amount. Everything else is yours:

• Self-employment tax. Both halves of Social Security and Medicare, 15.3 percent, reported on Schedule SE.
• Income tax, paid in advance. Through quarterly estimated payments, because there is no withholding.
• Expenses. Tools, vehicle, phone, insurance, licensing, continuing education. These become deductible, which helps, but you spend the money first.
• Benefits. Health insurance, a retirement match, paid time off, paid holidays. Gone unless you buy them.
• Protections. Federal overtime, workers' comp, unemployment insurance. Gone, and none of them can be bought back at any price that makes sense.

Self-employment tax, exactly

Self-employment (SE) tax is 12.4 percent for Social Security plus 2.9 percent for Medicare, 15.3 percent combined, under the Self-Employment Contributions Act. Three details change the real number:

• It applies to 92.35 percent of your net earnings, not all of them. The IRS lets you knock off 7.65 percent first, standing in for the employer half an employee never pays tax on. So the effective SE rate on net profit is 15.3 times 0.9235, about 14.13 percent.
• Net, not gross. SE tax is figured on your profit after business expenses on Schedule C. Every legitimate expense lowers it.
• Half of it is deductible against income tax. You subtract half your SE tax as an adjustment to income on Form 1040. That lowers income tax, not SE tax itself.

The Social Security piece stops at an annual wage base the Social Security Administration indexes every year, and an extra 0.9 percent Medicare tax applies above a high income threshold. Most techs never reach either. If you have a W-2 job and 1099 work in the same year, W-2 wages count toward the wage base first. SE tax is owed once net earnings from self-employment pass a small threshold the IRS sets, so a few weekends of side work can trigger it.

The worked example: is 1.25 times your rate a raise?

Say you earn a W-2 wage, and a year of it at 2,080 paid hours (including 80 hours of PTO and 40 of holidays) adds up to 100 units. A shop offers you 1099 work at 1.25 times your hourly rate. All figures below are in the same units, and the assumptions are illustrative, so swap in your own.

Step 1: hours actually paid. A contractor is paid for hours worked, not for vacation or holidays. Your 2,080 paid hours included 120 you did not work, so you work 1,960. At 1.25 times the rate: 1,960 times 1.25 equals 2,450 rate-hours, against the W-2 job's 2,080. That is 1.178 times the W-2 gross, so 1099 gross is about 117.8 units. The "25 percent raise" is already 17.8 percent.

Step 2: expenses. Say tools, phone, a share of your truck, a general liability policy and license fees run 10 percent of gross: 11.8 units. Net profit is 117.8 minus 11.8, which is 106.0 units.

Step 3: SE tax. 106.0 times 0.9235 times 0.153 is 15.0 units. Cash after expenses and SE tax: 106.0 minus 15.0 leaves 91.0 units.

Step 4: compare to the W-2 job. The W-2 tech pays 7.65 units of FICA and keeps 92.35 units before income tax. So far the 1099 offer is 1.35 units behind, and we have not touched benefits.

Step 5: buy back the benefits. Say the W-2 job's employer health contribution was worth 10 units and its retirement match 3 units. To stand where the W-2 tech stands, the contractor spends 13 units: 91.0 minus 13 leaves 78.0 units against the W-2 tech's 92.35.

Step 6: credit the deductions honestly. The contractor deducts half the SE tax (7.5 units) and may take the qualified business income deduction (below). In the 12 percent federal bracket those recover roughly 3 units. The self-employed health insurance deduction only puts the contractor level with the W-2 tech, whose employer premium was never taxed in the first place, so it recovers nothing relative to them. Landing point: about 81 units against 92.35. The 1.25 times offer is a pay cut of about 12 percent on this comparison.

Where it breaks even. Under the same assumptions, cash after SE tax works out to 72.83 units for every 1.0 times the rate, so to clear 92.35 plus the 10 units of benefits net of the tax recovery you need 102.35 divided by 72.83, about 1.4 times your W-2 hourly rate. Change the inputs and the answer moves: no employer health plan to replace drops it toward 1.3 times, a truck and full tool set to buy pushes it past 1.5 times.

Estimated taxes: the bill that arrives in April otherwise

With no withholding, you pay as you go with Form 1040-ES. You owe estimates when you expect to owe at least a small threshold the IRS sets after any withholding and credits. Miss them and Form 2210 computes an underpayment penalty, which works like interest on what you should have paid each quarter.

QUARTER  INCOME EARNED         PAYMENT DUE
Q1       Jan 1 to Mar 31  ->   April 15
Q2       Apr 1 to May 31  ->   June 15
Q3       Jun 1 to Aug 31  ->   September 15
Q4       Sep 1 to Dec 31  ->   January 15 (next year)

A due date on a weekend or holiday moves to the next
business day. Q2 covers two months; Q4 covers four.

The uneven quarters catch people: the June payment comes two months after April's, the January one four months after September's. For a seasonal trade, the IRS annualized income method (Form 2210, Schedule AI) lets you pay less in quarters you earned less, which matters for a pool or lawn tech whose income lands between April and September.

The safe harbor. You avoid the penalty if your estimates plus withholding equal at least 90 percent of this year's tax or 100 percent of last year's (110 percent if last year's adjusted gross income was over a threshold the IRS sets). In your first 1099 year, last year's tax was a W-2 year, so paying 100 percent of it in four equal pieces is the simplest way to be penalty-proof while you learn your numbers. You still owe the rest in April, so keep setting it aside.

A rule of thumb many self-employed techs use is to move 25 to 30 percent of every payment into a separate savings account the day it arrives. In the example, SE tax alone is 15.0 of 117.8 gross units, about 13 percent, before any federal or state income tax. See related: Filing Quarterly Estimated Taxes on Side Income, for the mechanics.

What you can deduct, and the catch on each

Deductions are real, but each one requires you to spend first and document it.

• Tools and equipment. Deductible, often all in the first year rather than depreciated, under current IRS rules. Keep receipts.
• Vehicle. Either the IRS standard mileage rate, which is reset yearly, or actual expenses times your business-use percentage. Commuting from home to a first job site is generally not deductible unless your home is your principal place of business. Without a mileage log you cannot defend either method.
• Phone and internet. The business-use share only.
• Insurance. General liability, tool coverage, commercial auto. The self-employed health insurance deduction covers premiums for you and your family, but not for any month you were eligible for an employer-subsidized plan, including a spouse's.
• Licenses, certifications, union dues, continuing education, work clothing that cannot be worn as street clothes.
• Home office. Only for space used regularly and exclusively for the business. A kitchen table does not qualify.
• Retirement. A SEP-IRA or solo 401(k) can shelter a large share of profit. See related: Retirement Accounts Without an Employer Plan.
• Qualified business income (QBI) deduction. Section 199A lets many self-employed people deduct up to 20 percent of qualified business income from income tax (not SE tax). 2025 federal legislation made it permanent; current as of 2026, but check IRS Form 8995 instructions for the year you file.

The benefits and protections that disappear

The example priced health and the retirement match. Four more losses never show up in a rate comparison:

• Overtime. The Fair Labor Standards Act requires time and a half over 40 hours a week for non-exempt employees. A contractor has no overtime right. A tech who averaged five overtime hours a week as an employee lost that premium the day they signed. The temporary federal deduction for qualified overtime, created in 2025 and current as of 2026, applies only to overtime premium the FLSA requires an employer to pay, so a contractor has none to deduct.
• Workers' comp. Hurt on a 1099 job and there is generally no comp claim, so medical bills and lost time are on you and your own health and disability coverage. See related: What Workers' Comp Pays You If You Get Hurt.
• Unemployment insurance. A contractor whose work dries up generally cannot claim state unemployment. See related: Seasonal Layoffs and Unemployment Insurance.
• Paid time off and holidays. Already priced into Step 1 above, which is exactly where most techs forget it.

Is it really 1099 work?

The label on the form does not decide your status; the facts do. The IRS uses a common-law test of behavioral control, financial control and the relationship of the parties. If the shop sets your schedule, dispatches you, sets your prices, requires its uniform and its truck, and you cannot work for anyone else, you probably look like an employee whatever the paperwork says. States layer their own tests on top, and several are stricter than the IRS: California and Massachusetts apply an ABC test that presumes employment unless the business proves all three parts, for many state-law purposes. The federal Department of Labor's FLSA test has been revised more than once in recent years, so check the current version.

If you think you are misclassified, you can ask the IRS for a determination on Form SS-8, and Form 8919 lets a worker who was treated as a contractor pay only the employee share of Social Security and Medicare on those wages. Your state labor department handles wage claims. This is not legal advice: before you file anything against a shop you still work for, talk to an employment attorney or your state labor agency and bring the agreement, a few weeks of dispatch records and the 1099s.

References

• IRS Publication 334, Tax Guide for Small Business, and Schedule SE instructions
• IRS Form 1040-ES and Form 2210 instructions (estimated tax and the safe harbor)
• IRS Form 8995 instructions (qualified business income deduction) and Form SS-8
• U.S. Department of Labor, Fair Labor Standards Act overtime and employee status guidance
• See related: Filing Quarterly Estimated Taxes on Side Income, Evaluating a Job Offer Beyond the Hourly Rate, W-2 Employee vs 1099 Contractor Classification