#tax-deductions
Tax Deductions
Maximize tax deductions and reduce your tax liability legally
Trader Tax Status and the Section 475(f) Mark-to-Market Election: How Active Traders Escape the Wash Sale Rule and the $3,000 Capital Loss Cap
Active traders can convert capital losses into ordinary deductions and eliminate the wash sale rule by filing a Section 475(f) mark-to-market election — but the statement must be attached to the prior year's April 15 return. A working guide to qualifying for trader tax status, the three big benefits of the election, Form 3115 mechanics, and the mistakes that invalidate it.
Cost Segregation Studies: Reclassifying Building Components Into 5, 7, and 15-Year Lives for Front-Loaded Tax Savings
A cost segregation study uses engineering-based analysis to move 20–45% of a building's basis from 27.5- or 39-year straight-line into 5, 7, and 15-year MACRS classes. Combined with the 100% bonus depreciation permanently restored by the One Big Beautiful Bill Act for property placed in service after January 19, 2025, real estate investors can convert a routine $91,000 first-year deduction into roughly $766,000 — provided they clear IRC §469 passive activity loss limits via real estate professional status, the short-term rental rule, or passive income offsets.
Hobby or Business? The IRS Section 183 Nine-Factor Test for 2026
How the IRS Section 183 nine-factor test decides whether your side activity's losses are deductible in 2026, what the three-of-five safe harbor really means, and what 2025's Young v. Commissioner reveals about the records that win in Tax Court.
The Accountable Plan: How S-Corp Owners Reimburse Themselves Tax-Free for Home Office, Mileage, and Travel
A working IRS-compliant accountable plan lets S-Corp owners reimburse home office, 72.5¢/mile mileage, internet, and travel tax-free—turning otherwise-lost expenses into deductible corporate spending. This guide covers the three §1.62-2 requirements, a worked $3,126 home office calculation, the five mistakes that get plans reclassified as wages, and the monthly bookkeeping rhythm that keeps it audit-proof.
Donor-Advised Funds and the Charitable Bunching Strategy: Beating the 2026 Tax Floor with Concentrated Giving
The OBBBA's 0.5% AGI floor and 35% deduction cap take effect in the 2026 tax year, raising the cost of small annual gifts. Concentrating four years of donations into a single donor-advised fund contribution can add roughly $39,600 in total deductions for a $200,000-AGI couple while keeping the recipient charities on their normal schedule.
Section 174A R&D Expensing Restored: A Small-Business Guide to Amending 2022-2024 Returns
The One Big Beautiful Bill Act's Section 174A restores immediate domestic R&D expensing starting in 2025, and small businesses under roughly $31 million in average gross receipts have until July 6, 2026 to amend 2022, 2023, and 2024 returns to recover taxes paid under the TCJA capitalization rules.
Section 179 vs. 100% Bonus Depreciation Under OBBBA: How Small Businesses Should Choose Their Equipment Write-Off Strategy in 2026
A 2026 decision guide for small businesses choosing between Section 179's $2.56M cap and OBBBA's permanent 100% bonus depreciation, with order-of-operations rules, hybrid examples, and state-conformity caveats.
The Augusta Rule: How to Rent Your Home to Your Business for Up to 14 Tax-Free Days
Section 280A(g) — the Augusta Rule — lets business owners rent their personal residence to an S-corp, C-corp, or partnership for fewer than 15 days a year and exclude the entire rent from federal income tax. In Sinopoli v. Commissioner (2023), the IRS slashed roughly $290,000 of claimed rent down to $30,000 because documentation and fair-market rates were thin. Here is what 280A(g) actually requires, the five pillars of an audit-proof setup, and how to report the rent without triggering an IRS mismatch.
The HSA: The Stealth Retirement Account That Beats Your 401(k) on Tax Efficiency
How the 2026 Health Savings Account combines tax-free contributions, tax-free growth, and tax-free medical withdrawals — and how the shoebox strategy turns an $8,750 family limit into a six- to seven-figure retirement vehicle by age 65.
Section 183 Hobby Loss Rule: How the IRS Nine-Factor Test Decides If Your Side Activity Is a Business
Section 183 of the Internal Revenue Code denies loss deductions for activities not engaged in for profit. The IRS applies a nine-factor test and a three-of-five-years safe harbor (two of seven for horses) to distinguish a real business from a hobby — here is what each factor weighs and how to document profit motive before an audit.
Cash Balance Plans for High-Income Solo Practitioners: How Doctors, Lawyers, and Consultants Defer Six Figures Tax-Free
U.S. cash balance pension plans let solo doctors, attorneys, and consultants deduct $100,000–$370,000 a year on top of a Solo 401(k). 2026 contribution limits, a worked example for a 54-year-old physician, and the actuarial commitments to weigh before signing.
De Minimis Safe Harbor Election: Expensing Tangible Property Up to $2,500 Per Item Without Depreciation
The de minimis safe harbor election under Treasury Regulation 1.263(a)-1(f) lets businesses without audited financials immediately expense tangible property purchases up to $2,500 per item, skipping depreciation schedules and capitalization analysis.