The IRS uses a nine-factor test under Section 183 to decide whether your side income is a business or a hobby. After the OBBBA took effect in 2026, hobbyists report income in full but can deduct no expenses against it — making the classification more consequential than ever.
The average small business now pays for 18 software subscriptions a month. Here is which categories actually matter in 2026, what to budget, and how to deduct each one correctly on Schedule C.
A line-by-line walkthrough of the 2026 deductions and credits that move the needle for individuals—the $16,100 standard deduction, the new $40,400 SALT cap, the $2,200 Child Tax Credit, the up-to-$8,231 EITC, and the new Schedule 1-A deductions for tips, overtime, and vehicle loan interest.
For 2026 the SALT cap rises to $40,000, reviving the sales tax deduction for homeowners and big-ticket buyers. Choose between sales tax and state income tax on Schedule A, use the IRS optional tables, and stack actual tax paid on vehicles, boats, or renovation materials on top of the table amount.
How self-employment tax works in 2026 — the 15.3% combined rate, the $184,500 Social Security wage base, the $400 filing threshold, quarterly estimated payment deadlines, the deductions that reduce both income and SE tax, and the income level where an S-corp election starts to pay off (typically $60K–$80K net).
A category-by-category guide to every major small business tax deduction for 2026, including the $2,560,000 Section 179 cap, 60% bonus depreciation, the 68.5-cent mileage rate, the 50% meals rule, and the documentation needed to defend each one on audit.
A working playbook for small business owners filing in 2026 — covering the now-permanent QBI deduction, the $2.56M Section 179 cap, S-corp salary structure, Solo 401(k) limits up to $72,000, and the bookkeeping habits that make every other strategy survive an audit.
A practical 2026 walkthrough of how the IRS taxes sole proprietors — covering Schedule C, the 15.3% self-employment tax on 92.35% of net earnings, quarterly estimated payments, the QBI deduction, and the threshold where an S-Corp election starts paying off.
A 2026 reference for U.S. tax credits — how they differ from deductions, which credits are refundable, and the major individual and business credits with current dollar limits, including the $8,231 EITC max, $2,200 Child Tax Credit, and up to $9,600 WOTC per qualifying hire.
Personal tax prep fees are no longer federally deductible after the 2026 One Big Beautiful Bill Act, but business owners and self-employed filers can still deduct the business portion on Schedule C, E, F, 1065, 1120-S, or 1120—if they allocate and document it correctly.
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