Year-End Tax Saving Strategies for Businesses and Their Owners

As we approach the end of the tax year, taking proactive steps before December 31 can lead to significant tax savings for your business and personal tax filings.

To make this review straightforward and actionable, we have organized 10 powerful year-end tax strategies across different business structures—including Schedule C sole proprietorships, Partnerships, S Corporations, and C Corporations.

1. Accelerated Depreciation (Section 179 & Bonus Depreciation)

Applicable to: All Entities (Sch C, Partnerships, S Corps, C Corps)

Tax Reduction Impact: Unlocks immediate, first-year tax write-offs for up to 100% of the cost of qualifying machinery, vehicles, equipment, and software, reducing your overall taxable income dollar-for-dollar in the current tax year.

Key Detail: Simply ordering or paying for an asset is not enough; the asset must be fully placed in service and available for operational business use by midnight on December 31.

What to Do Now or Before Dec 31st: Review your capital equipment plans for next year. If you need equipment or vehicles, purchase and put them into operational service before December 31.

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2. Deferring Income and Accelerating Expenses

Applicable to: Cash-Basis Taxpayers (Common across Sch C, Partnerships, and S Corps)

Tax Reduction Impact: Lowers current-year taxable income by shifting earnings into the next calendar year and pulling future deductible operating expenses into the current tax year.

Key Detail: Income is taxable when constructive receipt occurs (when you receive the check or electronic payment), not when you deposit it.

What to Do Now or Before Dec 31st: Delay issuing late-December invoices until early January, and prepay upcoming operating expenses, rent, vendor bills, or subscriptions before December 31.

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3. Retirement Plan Setups & Contributions

Applicable to: All Entities

Tax Reduction Impact: Directly reduces your personal and business adjusted gross income (AGI) while allowing business owners to build tax-deferred wealth through high contribution limits.

Key Detail: Plan types vary in setup deadlines—a 401(k) or Solo 401(k) must be formally established by December 31, while SEP-IRAs can be created and funded up to your tax return filing deadline (including extensions).

What to Do Now or Before Dec 31st: Formally adopt any new 401(k) or cash-balance plans by December 31, and project maximum owner contribution limits with our firm.

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4. Reasonable Compensation & Distribution Balancing

Applicable to: S Corporation Owners

Tax Reduction Impact: Minimizes the 15.3% self-employment (FICA) tax burden by taking a portion of profits as owner distributions rather than payroll, while remaining fully compliant with IRS standards.

Key Detail: The IRS actively audits S Corps for unreasonably low owner salaries designed to avoid FICA taxes.

What to Do Now or Before Dec 31st: Run a year-end payroll evaluation to ensure owner W-2 compensation reflects a reasonable salary for services rendered before final year-end payroll runs.

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5. Pass-Through Entity Tax (PTET) Election

Applicable to: Partnerships and S Corporations

Tax Reduction Impact: Converts state income taxes into an entity-level business expense, effectively bypassing the federal $10,000 State and Local Tax (SALT) deduction cap on individual tax returns.

Key Detail: Entity-level payments act as an ordinary business deduction, successfully reducing federal taxable pass-through income for owners.

What to Do Now or Before Dec 31st: Verify state eligibility, file the state PTET election form if required before year-end, and make the required estimated state tax payment by December 31.

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6. Optimizing Section 199A QBI Deduction

Applicable to: Schedule C, Partnerships, and S Corporations

Tax Reduction Impact: Enables eligible pass-through business owners to deduct up to 20% of their qualified net business income directly on their individual federal tax return.

Key Detail: Above taxable income threshold limits, the deduction becomes limited by total W-2 wages paid by the business or unadjusted basis of qualifying property held.

What to Do Now or Before Dec 31st: Run a year-end income projection. If you are near threshold limits, adjusting owner payroll or making capital investments before December 31 can help capture the maximum 20% deduction.

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7. C Corp Dividend & Fringe Benefit Structuring

Applicable to: C Corporations

Tax Reduction Impact: Leverages the flat 21% federal corporate rate while allowing the business to write off 100% tax-deductible executive fringe benefits (like medical reimbursement plans) that are tax-free to owner-employees.

Key Detail: Retaining earnings within the corporation for legitimate reinvestment avoids double taxation on dividend distributions.

What to Do Now or Before Dec 31st: Review corporate profit retention vs. distribution goals, and establish tax-deductible executive fringe benefit plans prior to year-end.

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8. Bad Debt & Obsolete Inventory Write-Offs

Applicable to: All Entities (Accrual-Basis Taxpayers)

Tax Reduction Impact: Immediately reduces ending taxable net profit by writing off worthless customer receivables and accounting for unsalable or damaged goods.

Key Detail: Accrual-basis filers must demonstrate that a debt is completely worthless or inventory valuation has dropped permanently before claiming the tax deduction.

What to Do Now or Before Dec 31st: Review your accounts receivable aging report to formally write off uncollectible receivables, and complete a physical inventory audit before December 31 to write down damaged or obsolete goods.

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9. Owner Health Insurance Deductions

Applicable to: S Corps & Schedule C Filers

Tax Reduction Impact: Captures an above-the-line deduction for 100% of owner and family health, dental, and long-term care insurance premiums, directly lowering personal taxable income.

Key Detail: For >2% S Corp shareholders, the company must pay or reimburse the premiums, and the amount must be reported in Box 1 of the owner's Form W-2 to qualify for the 1040 deduction.

What to Do Now or Before Dec 31st: Inform your payroll administrator before the final year-end payroll run to ensure health insurance premium totals are correctly added to Box 1 of the owner's W-2.

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10. De Minimis Safe Harbor Expensing ($2,500 Rule)

Applicable to: All Entities

Tax Reduction Impact: Accelerates tax deductions by allowing immediate full expensing of lower-cost tangible assets rather than tracking and depreciating them over multiple tax years.

Key Detail: Items costing $2,500 or less per item or invoice (or up to $5,000 if you have audited financial statements) qualify for immediate expense treatment under IRS safe harbor rules.

What to Do Now or Before Dec 31st: Conduct a review of end-of-year purchases for office supplies, small electronics, furniture, or tools, and ensure invoices under $2,500 are categorized directly as operational expenses.

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Summary Checklist by Entity Type

Strategy / Focus	Sch C	Partnership	S Corp	C Corp
1. Sec. 179 / Bonus Depreciation	Yes	Yes	Yes	Yes
2. Defer Income / Accelerate Expenses	Yes	Yes	Yes	Yes
3. Retirement Plan Contributions	Yes	Yes	Yes	Yes
4. Reasonable Compensation Optimization	N/A	N/A	Yes	N/A
5. Pass-Through Entity Tax (PTET)	N/A	Yes	Yes	N/A
6. QBI (Sec. 199A) Deduction	Yes	Yes	Yes	N/A
7. Corporate Rate & Fringe Benefits	N/A	N/A	N/A	Yes
8. Bad Debt & Inventory Write-Offs	Yes	Yes	Yes	Yes
9. Owner Health Insurance Deductions	Yes	N/A	Yes	N/A
10. De Minimis Safe Harbor ($2,500)	Yes	Yes	Yes	Yes