Independent Contractor Tax Checklist — April 15, 2026
The 8 deductions most 1099 workers miss, the extension process, and what you owe today. Not tax advice — always verify with your accountant.
Option A — File your return: Form 1040 + Schedule C + Schedule SE. Pay any balance owed.
Option B — File an extension: Submit Form 4868 by April 15 → you have until October 15 to file. BUT still pay your estimated tax owed by April 15 or interest starts accruing.
Also due April 15: Q1 2026 estimated tax payment (for income earned Jan–Mar 2026). This is a separate payment from your 2025 return.
8 deductions most 1099 workers miss — check these now
| Deduction | What it covers | 2025 rate/limit | Schedule C line |
|---|---|---|---|
| SE tax deduction (50%) | Half of your self-employment tax reduces AGI | 7.65% of net SE income | Schedule 1, Line 15 |
| QBI deduction | Up to 20% of net business income for most freelancers | Phases out above $197,300 single / $394,600 joint | Form 8995 |
| Home office | Exclusive business-use space — simplified: $5/sq ft up to 300 sq ft | Up to $1,500 simplified; or actual % of home expenses | Form 8829 |
| Business mileage | Client visits, coworking spaces, project sites, supply runs | 70¢/mile (2025). Keep a mileage log. | Line 9 (car expenses) |
| Health insurance premiums | Self-employed health, dental, vision for you and family | 100% deductible if not eligible for employer plan | Schedule 1, Line 17 |
| Retirement contributions | SEP-IRA: up to 25% net SE income. SOLO 401k: up to $69,000 | SEP-IRA contributions can still be made until April 15! | Schedule 1, Line 16 |
| Software & subscriptions | Adobe, Notion, Slack, Zoom, QuickBooks, Canva, etc. | 100% if used exclusively for business | Line 18 (office expenses) |
| Business credit card fees | Annual fees on business cards, payment processing fees | 100% deductible. Rewards earned are NOT taxable income. | Line 10 (commissions/fees) |
The SEP-IRA deadline trick — still available today
You can make a 2025 SEP-IRA contribution today and deduct it on your 2025 return. The SEP-IRA contribution deadline is your tax return due date including extensions — April 15 if not extending, October 15 if you file Form 4868. This is one of the only deductions you can take for 2025 that you haven’t already spent.
The contribution limit is 25% of net self-employment income (approximately 20% of gross self-employment income after the SE tax deduction). On $80,000 gross 1099 income, that’s roughly $14,000 in potential deductions — saving $4,200–5,600 in taxes at a 30–40% effective rate.
Same-day setup: Vanguard, Fidelity, and Charles Schwab all allow you to open a SEP-IRA and make a prior-year contribution online in the same day. You need your SSN or EIN, your net self-employment income figure, and a bank account for the transfer.
Q1 2026 estimated payment — also due April 15
April 15 is a double deadline: your 2025 annual return AND your first quarterly estimated payment for 2026 income earned January–March.
| Quarter | Income period | Due date |
|---|---|---|
| Q1 2026 | January–March 2026 | April 15, 2026 |
| Q2 2026 | April–May 2026 | June 16, 2026 |
| Q3 2026 | June–August 2026 | September 15, 2026 |
| Q4 2026 | September–December 2026 | January 15, 2027 |
To avoid underpayment penalties, pay either 90% of your 2026 estimated tax OR 100% of your 2025 tax liability (110% if your 2025 AGI exceeded $150,000). Use IRS Direct Pay at IRS.gov or EFTPS.
Business credit cards and your taxes
- Rewards earned are NOT taxable income. Cash back, points, and miles earned from credit card spending are treated as a rebate on purchase price by the IRS — not income. You do not report them on your return.
- Annual fees on business cards ARE deductible. The annual fee on the Chase Ink Cash, Amex Blue Business Cash, or any business credit card is a deductible business expense on Schedule C Line 10.
- Payment processing fees ARE deductible. Stripe, Square, PayPal fees — all Schedule C Line 10.
- Business expenses charged to a rewards card are still fully deductible. You get the deduction AND the cash back. There is no offset.
- The $600 reporting threshold for 2025 returns. For tax year 2025 (the return due April 15), the 1099-NEC threshold is still $600.