Alex Zelaya
Above the line deductions for solopreneurs work harder than most write-offs because they lower your adjusted gross income first, which can widen your eligibility for other credits and savings. From self-employment tax to health insurance and retirement contributions, here are the seven worth reviewing, plus how your business structure changes the way you claim them. Lettuce keeps the system running.
Your adjusted gross income controls more of your tax bill than most solos realize. Above the line deductions reduce that number first, and a lower AGI can expand your eligibility for other deductions and credits.
Per IRS Schedule 1, these 7 above the line deductions for solopreneurs span health insurance, retirement contributions, and more. How you claim them changes depending on whether you run a sole proprietorship or an S Corp. See how Lettuce helps you build a system that captures every deduction before filing time.
Curious if an S Corp is right for you?
Try the Lettuce Tax Calculator to see how much more you can take home each year.
See your savings
What Above-The-Line Deductions Actually Do For Your AGI
If you're asking what above-the-line deductions are for solopreneurs and how they lower adjusted gross income, the answer starts with one number: your AGI. That number does more work than most people realize, and the deductions that reduce it are worth understanding before anything else on your return.
AGI Is the Number That Controls More Than You Think
Adjusted gross income is your total income minus a specific set of deductions, calculated before you take the standard or itemized deduction. The IRS uses AGI as a baseline for dozens of rules. Credit eligibility, contribution limits, and phaseouts (thresholds where tax benefits start to shrink) all hinge on your AGI. Knowing how to calculate your AGI shows you exactly what these deductions are worth.
These Aren't the Same as Your Business Write-Offs
This is where a lot of solopreneurs get tripped up. Deductible business expenses on Schedule C or your S Corp return reduce income before it reaches your personal return. Itemized deductions come after AGI is already set. Above the line deductions land in a different place on your return: they reduce AGI directly on Schedule 1 of Form 1040, and they work whether you itemize or not.
A Lower AGI Pays Off in More Than One Place
That distinction matters because of what a lower AGI actually does for you downstream. Dropping your AGI by $10,000 doesn't just save taxes on that $10,000. It can also preserve eligibility for credits, keep you under Roth IRA income limits, and reduce phase-outs on other benefits. The IRS recently introduced Schedule 1 to capture newly enacted above-the-line deductions for 2025 and beyond. For a solopreneur, that multiplier effect is why these adjustments deserve priority over smaller miscellaneous write-offs.
7 Above-The-Line Deductions Solopreneurs Should Review First in 2026
For self-employed solopreneurs, several above-the-line deductions in 2026 lower AGI before the standard deduction enters the picture. These are the seven to put at the top of your list.
Some apply broadly to any self-employed person, and others depend on your business structure, income level, or personal situation. The list is the same for everyone; the fit is not.
- Deductible half of SE tax: Deduct 50% of your self-employment tax from gross income before anything else is calculated.
- Self-employed health insurance: Medical, dental, and vision premiums are fully deductible via Form 7206, whether you're a sole proprietor or S Corp owner.
- Retirement contributions: Solo 401(k) and SEP IRA contributions reduce your AGI dollar for dollar, up to annual IRS limits.
- HSA contributions: Contribute up to $4,400 for self-only or $8,750 for family in 2026 if enrolled in a qualifying high-deductible health plan.
- Student loan interest: Deduct up to $2,500 in qualifying interest paid, subject to income phase-outs.
- Educator expenses: Deduct up to $300 for out-of-pocket classroom costs if you teach K-12.
- Alimony payments: Divorce agreements finalized before January 1, 2019 remain eligible for this deduction under current tax law.
For most businesses-of-one, the biggest savings come from three: SE tax, health insurance, and retirement. Seeing how all seven flow into your AGI calculation is where the picture comes together, and where your business structure starts to matter.
How These Deductions Change If You Run A Sole Proprietorship Or An S Corp
Sole proprietors claim the self-employed health insurance deduction and retirement contributions directly against self-employment income on their personal return. S Corp owners can use the same above-the-line deductions to reduce taxable income, but the path to that deduction looks different. Premiums must be paid or reimbursed by the S Corp. The IRS requires them to appear in Box 1 of your W-2 and be excluded from FICA boxes. Miss any one of them, and the deduction disappears.
The same logic applies to retirement contributions. S Corp ownership does not create new tax breaks. It creates a different path to the same deductions, and that path runs through a reasonable salary and properly run payroll. The IRS requires Solo 401(k) employer contributions to be calculated from W-2 wages, not owner distributions. Set wages too low, and you shrink your retirement contribution room along with your deduction. That is why platforms like Lettuce build payroll and tax reporting together, so the path to those savings stays intact.
Above the Line Deductions vs. Itemized Deductions for Solo Business Owners
Your tax return works in layers, and each deduction type sits at a different level of that stack. Comparing above-the-line deductions with itemized deductions for solo business owners makes the priority order clear and turns tax season from a scramble into a repeatable strategy.
| Deduction Type | Where It Appears | Lowers AGI | Best For | Common Solopreneur Examples |
|---|---|---|---|---|
| Above the Line Deductions | Schedule 1 (Form 1040) | Yes (reduces AGI directly) | All solopreneurs, whether or not they itemize | SE tax deduction, self-employed health insurance, retirement contributions, HSA contributions |
| Itemized Deductions | Schedule A (Form 1040) | No (applies after AGI is calculated) | Solopreneurs whose deductible personal expenses exceed the standard deduction | Mortgage interest, state and local taxes, charitable contributions |
| Business Expenses | Schedule C or Form 1120-S | Yes (reduces net income before AGI) | All solopreneurs; lowers both income tax and self-employment tax | Home office, mileage, software subscriptions, contractor payments |
| S Corp Shareholder Adjustments | Schedule K-1, W-2 | Yes (flows through W-2 and K-1 to AGI) | S Corp owners with W-2 salary and clean payroll reporting | Health insurance premiums on W-2, Solo 401(k) contributions |
The right order is: claim business expenses at the entity level first, then take above-the-line deductions on your personal return, then take the standard deduction or itemized deductions. That sequenced approach mirrors how the IRS processes your return, and it answers most of the questions solopreneurs ask when they first compare these deduction types, including where S Corp taxes and calculating your AGI as a freelancer fit in.
Frequently Asked Questions About Above The Line Deductions For Solopreneurs
Tax questions rarely have one-size-fits-all answers, and above-the-line deductions for self-employed professionals are no exception. Here is what comes up most often, along with clear answers.
What counts as an above-the-line deduction for a self-employed business owner?
These deductions reduce your adjusted gross income before you reach the standard or itemized deduction stage. For self-employed professionals, the main ones are health insurance premiums, retirement contributions, and the deductible half of self-employment tax (an employer-equivalent write-off). HSA contributions qualify if you have a high-deductible health plan. Student loan interest applies if you carry education debt.
Can a single-member LLC or S Corp owner claim the same above-the-line deductions?
Yes, but the path differs in structure. A single-member LLC filing as a sole proprietor reports these deductions on their personal tax return (Schedule 1). An S Corp owner needs to run health insurance through payroll and keep clean payroll records. The S Corp health insurance deduction amount is identical. The paperwork path is not.
Which records should a solopreneur keep to support health insurance, HSA, and retirement deductions?
For health insurance, keep monthly premium statements and proof that the policy is in your S Corp's name (or your own name as a sole proprietor). For HSA contributions, IRS Publication 969 requires Form 8889 at filing, so keep contribution receipts and bank statements. For retirement, IRS Publication 560 outlines contribution limits and deadlines, so keep plan documents and contribution confirmations.
Does the home office deduction count as an above-the-line deduction?
The home office deduction is a business expense, not an above-the-line deduction. Self-employed owners report it on Schedule C, which reduces net self-employment income before AGI is calculated. IRS Publication 587 covers both the simplified and actual expense methods. For a detailed breakdown of which expenses count, see the business expenses list for solopreneurs.
Make These 7 Deductions Part Of A Smarter Solo Tax System
In tax planning for solopreneurs, the real win is a system where deductions are captured as you earn, not rediscovered in March. The IRS covers retirement plan options and mileage rates, but consistent tracking is what turns each into real savings.
When income, expenses, and deductions are tracked in one place, nothing gets missed. Lettuce helps you run an S Corp, keep bookkeeping current, and never miss a deadline. The Lettuce-Back Guarantee means if your savings do not exceed your subscription cost, you get your fees back.
