First 90 Days Freelance
Open a separate business bank account in week one. Apply for an EIN immediately (it's free and instant online). Start logging every dollar of income and every business expense from day one. Set aside 25-30% of every payment you receive in a dedicated tax savings account. File your first quarterly estimated tax payment by the next quarterly deadline. Choose your bookkeeping method and stick with it. By day 90, you should have a functioning tax system that runs on autopilot.
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You just went freelance. Congratulations -- and welcome to a tax system that assumes you already know what you're doing. Nobody hands you a checklist when you leave your W-2 job. Your former employer was withholding income tax, paying half your Social Security and Medicare, and filing paperwork you never saw. All of that is now your responsibility. The good news: the first 90 days are where you build the habits and systems that make self-employment tax manageable for every year that follows. The bad news: if you skip these steps, you'll find out in April when you owe the IRS a five-figure bill you didn't budget for, plus penalties for not paying quarterly. This guide gives you the exact sequence, week by week.
Key mechanics
Self-employment tax: the 15.3% bill nobody warned you about
When you were a W-2 employee, your employer paid 7.65% of your wages in FICA taxes (6.2% Social Security + 1.45% Medicare), and you paid the other 7.65%. Now you pay both halves. That's 15.3% on the first $184,500 of net self-employment income in 2026, plus 2.9% Medicare on everything above that. If you earn more than $200,000 ($250,000 married filing jointly), an additional 0.9% Medicare surtax applies to earnings above that threshold.
The calculation starts with your net Schedule C profit (gross income minus business expenses), then multiplies by 92.35% (the self-employment tax base -- this adjustment exists because employees don't pay FICA on the employer's share of FICA, so the IRS gives self-employed people the same treatment). The result is your self-employment tax. Half of that tax is deductible as an adjustment to income on Schedule 1, which reduces your AGI.
For someone earning $70,000 net: $70,000 x 92.35% = $64,645. SE tax = $64,645 x 15.3% = $9,891. Deductible half = $4,945. This is in addition to your federal income tax. Most new freelancers don't realize their effective federal tax rate is 25-35%, not the 12% or 22% marginal income tax bracket they're used to seeing on their W-2 paystub.
This is why the 25-30% reserve isn't paranoia -- it's arithmetic.
Self-employed individuals pay both the employer and employee shares of Social Security and Medicare tax -- 15.3% on net earnings up to the wage base, 2.9% above it -- and can deduct half of the total as an income adjustment. (IRC Section 1401(a) (SE tax rate); IRC Section 1402(a) (net earnings from self-employment); IRC Section 164(f) (deduction for half of SE tax); Social Security wage base $184,500 for 2026)
Estimated tax payments: paying quarterly instead of per-paycheck
The US tax system is pay-as-you-go. When you had a W-2, your employer withheld taxes from every paycheck. Now that nobody is withholding for you, you are required to make quarterly estimated tax payments using Form 1040-ES. The deadlines are April 15, June 15, September 15, and January 15 of the following year. These dates are not intuitive -- Q1 covers January through March, Q2 covers only April and May, Q3 covers June through August, and Q4 covers September through December.
You must pay estimated tax if you expect to owe $1,000 or more when you file your return. The safe harbor rules let you avoid penalties two ways: pay at least 100% of your prior year's total tax liability (110% if your AGI exceeded $150,000), or pay at least 90% of your current year's tax liability. For your first year freelance, the prior-year safe harbor is usually easiest -- pay what you owed last year, divided by four.
If you started freelancing mid-year and your income is uneven, the annualized installment method (Form 2210, Schedule AI) lets you calculate each quarter's payment based on income actually earned in that period. This prevents overpaying in early quarters when you had little income.
Set up EFTPS (Electronic Federal Tax Payment System) at eftps.gov. Enrollment takes 5-7 business days for the PIN to arrive by mail. Once set up, you can schedule payments in advance and set recurring quarterly debits. Don't forget state estimated tax -- most states with income tax require separate quarterly payments on similar schedules.
Self-employed individuals must make quarterly estimated tax payments if they expect to owe $1,000 or more. Penalties apply for underpayment unless you meet one of the safe harbor thresholds. (IRC Section 6654 (estimated tax penalty); IRC Section 6654(d)(1)(B) (safe harbors -- 100%/110% prior year or 90% current year); Form 1040-ES)
Business structure: sole proprietorship vs LLC vs S-Corp
When you go freelance, you are a sole proprietor by default. You don't need to file anything with the IRS to start a sole proprietorship -- the moment you earn income outside of employment, you have one. You report income and expenses on Schedule C attached to your personal Form 1040. This is the simplest structure and the right one for most people in their first year.
An LLC (Limited Liability Company) is a state-level entity that provides liability protection but does not change your federal tax treatment. A single-member LLC is a "disregarded entity" for tax purposes -- you still file Schedule C exactly as if you were a sole proprietor. The LLC matters for lawsuits and business debts, not for taxes. Formation costs vary by state: $0 in some states, $70-$800 in others, plus annual fees (California charges $800/year just for the privilege of having an LLC).
An S-Corporation election (Form 2553) changes how you pay yourself. Instead of all profit being subject to SE tax, you pay yourself a "reasonable salary" (subject to FICA) and take the remaining profit as a distribution (not subject to SE tax). The break-even point where S-Corp tax savings exceed compliance costs ($3,500-$5,000/year for payroll processing, additional bookkeeping, and S-Corp tax return Form 1120-S) is generally around $80,000-$100,000 of net Schedule C income. Below that threshold, the administrative overhead costs more than the SE tax savings. We have a separate guide on the S-Corp decision point when you're ready.
Do not let a friend, internet forum, or TikTok accountant pressure you into forming an LLC or electing S-Corp in your first 90 days. Get through your first year as a sole proprietor, understand your actual income level, and then make the structure decision with real numbers.
A sole proprietorship is the default and simplest structure. Single-member LLCs don't change federal tax treatment. S-Corp election saves SE tax only when income exceeds the compliance cost break-even. (IRC Section 1361-1379 (S-Corporation); IRC Section 7701(a)(2) (disregarded entity); Treas. Reg. 301.7701-3(b)(1)(ii) (single-member LLC default classification); Form 2553)
Schedule C deductions: what you can write off from day one
Every ordinary and necessary business expense reduces your taxable profit and your self-employment tax base. "Ordinary" means common in your field. "Necessary" means helpful and appropriate. The IRS does not require expenses to be indispensable -- just legitimately business-related.
Common Schedule C categories for new freelancers: advertising and marketing (website, business cards, online ads), car and truck expenses (standard mileage rate of 72.5 cents per mile in 2026 OR actual expenses -- choose one method and track from day one), contract labor (1099-NEC for anyone you pay $600+ in a year -- threshold drops to $2,000 under OBBBA), depreciation of equipment (or Section 179 immediate expensing up to $2,560,000 in 2026), insurance (liability, E&O, health -- SE health insurance deduction is taken on Schedule 1, not Schedule C), internet and phone (business percentage only), office supplies, professional development (courses, books, conferences directly related to your business), rent (if you use a co-working space or studio), software subscriptions, and travel (away from your tax home overnight for business).
The home office deduction under IRC Section 280A requires "regular and exclusive use" of a defined space in your home for business. A desk in your bedroom doesn't qualify if you also use the bedroom for sleeping. A dedicated room, a partitioned area, or a separate structure (garage, shed) does qualify. You can use the simplified method ($5/sq ft, up to 300 sq ft = $1,500 max) or the regular method (actual expenses prorated by square footage). The regular method is almost always higher but requires tracking mortgage interest/rent, utilities, insurance, and repairs.
The single most important habit: capture every expense in real time. Use your phone to photograph receipts the day you get them. Enter them in your bookkeeping system weekly. Reconstructing a year of expenses in March is miserable and you will miss deductions.
Self-employed individuals can deduct all ordinary and necessary business expenses. Home office requires exclusive use of a dedicated space. Track expenses from day one -- reconstruction is painful and incomplete. (IRC Section 162 (trade or business expenses); IRC Section 280A (home office); IRC Section 179 ($2,560,000 limit for 2026); Rev. Proc. 2013-13 (simplified home office method); Standard mileage rate 72.5 cents/mile for 2026)
Action steps
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Week 1: Separate your money and get your EIN
Open a dedicated business checking account at any bank -- this is not optional, it's the single most important thing you do in week one. Every dollar of business income goes in, every business expense comes out. This creates an automatic paper trail that makes bookkeeping, tax prep, and audit defense dramatically easier. Do not use your personal account for business. The same day, apply for an Employer Identification Number (EIN) using Form SS-4 at irs.gov -- it's free and you'll receive your EIN immediately online. You need an EIN if you'll hire anyone, but even if you won't, having one means you can give clients your EIN instead of your Social Security number on W-9 forms. Start a simple income log: date, client, amount, description. A spreadsheet is fine for now.
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Weeks 2-3: Set up your bookkeeping and tax reserve system
Choose a bookkeeping tool and commit to it. Wave (free) or QuickBooks Self-Employed ($15/month) are standard choices for solo freelancers. Connect your business bank account so transactions import automatically. Set up your tax savings account -- a separate savings account (same bank or a high-yield online savings account) where you transfer 25-30% of every payment the day it clears. This is not optional. The money in this account is the IRS's money, not yours. Automate the transfer if your bank allows percentage-based rules. If your projected income is over $50,000, transfer 30%. If it's under $50,000 and you're single with no other income, 25% is usually sufficient. You'll true this up when you do your first estimated tax calculation.
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Week 4: Calculate your first estimated tax payment
Pull your prior year's tax return. Find your total tax liability (Form 1040, line 24). Divide by four. That's your safe harbor quarterly payment -- paying this amount each quarter guarantees no underpayment penalty, even if your freelance income is higher than expected. If you don't have a prior year return (first time filing) or your income has changed dramatically, estimate your current year: projected annual net income x 92.35% x 15.3% (SE tax) + projected annual net income x your marginal income tax rate (minus the standard deduction of $16,100 single or $32,200 married filing jointly). Enroll in EFTPS at eftps.gov to make electronic payments. Pay your first quarterly estimate by the next deadline. If you started freelancing in January, your first payment is due April 15.
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Month 2: Build your expense tracking habits and start your mileage log
By now you should have a month of transactions in your bookkeeping tool. Review them and assign each to the correct Schedule C category (advertising, supplies, professional services, etc.). Start a mileage log if you drive for business -- the IRS requires contemporaneous records, meaning you log the trip the day it happens, not reconstructed at year-end. Use a free app like Stride or MileIQ, or a simple spreadsheet (date, destination, business purpose, miles). The 2026 standard mileage rate is 72.5 cents per mile. A freelancer driving 8,000 business miles deducts $5,800 -- that's real money. Evaluate whether you may be able to claim the home office deduction: do you have a space used regularly and exclusively for business? If so, measure it and start tracking your housing costs (rent/mortgage, utilities, insurance, repairs).
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Month 2-3: Understand your 1099 obligations and set up filing systems
If you pay any subcontractor, freelancer, or unincorporated service provider $600 or more in a calendar year, you must file Form 1099-NEC by January 31 of the following year. Under the OBBBA, the 1099-NEC threshold rises to $2,000 (effective for payments made in 2026 and later). Collect a W-9 from every contractor before you pay them. Store W-9s in a secure folder -- you'll need the contractor's name, address, and TIN (Social Security number or EIN) to file the 1099. If you receive payments through platforms (Upwork, Fiverr, etc.), the platform may issue you a 1099-K. Cross-reference any 1099-K with your own records to ensure your income reporting is accurate. Set up a simple filing system: one folder for income records, one for expenses and receipts, one for tax filings and correspondence, one for W-9s collected from contractors.
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Month 3: Review, adjust, and plan for the year ahead
You now have 90 days of real data. Calculate your actual net income for the quarter (gross income minus business expenses). Compare it to your annual projection. If you're earning more than expected, increase your tax reserve percentage and your quarterly estimated payments. If you're earning less, you can reduce using the annualized installment method, but keep the reserve at 25% minimum -- it's better to overpay and get a refund than to underpay and owe penalties. Consider whether your income trajectory suggests an S-Corp election will make sense next year (the break-even is roughly $80,000+ net). If you haven't set up a retirement account, now is the time: a Solo 401(k) allows contributions up to $23,500 employee + 25% of net SE income employer (up to $70,000 total for 2026, $77,500 if age 50+), or a SEP-IRA allows up to 25% of net SE income (max $70,000). Both reduce your taxable income. The Solo 401(k) must be established by December 31, but contributions can be made until your tax filing deadline.
State variance
California
California requires separate quarterly estimated payments to the Franchise Tax Board (FTB) using Form 540-ES. The state marginal rate reaches 13.3%. If you form an LLC in California, the minimum annual franchise tax is $800 regardless of income, plus a gross receipts fee starting at $900 for gross income over $250,000. The LLC fee is due even if you have zero net profit.
Texas
Texas has no state income tax, so you only need to make federal estimated payments. However, if your annual revenue exceeds $2,470,000 you'll owe franchise tax (0.375% for retail/wholesale, 0.75% for other businesses). Most new freelancers are well below this threshold.
New York
New York State and New York City have separate income taxes. City residents face a combined state + city marginal rate of up to 14.8%. Estimated tax payments must be made to New York State using Form IT-2105. NYC residents may also need to file estimated payments for city tax. New York's PTET (pass-through entity tax) is available for S-Corps but not sole proprietors.
Frequently asked questions
What happens if I miss the April 15 tax deadline?+
Do I need a CPA or can I file my own taxes?+
How do quarterly estimated tax payments work?+
Do I need to register my business with the state to start freelancing?+
I'm still working part-time at my old job while freelancing on the side. How does this change things?+
What records do I need to keep and for how long?+
Should I get a business credit card?+
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