Year-end tax planning represents the final opportunity annually to implement strategies that reduce tax liability. For high-income business owners, real estate investors, and professionals earning $500,000 or more, comprehensive year-end planning can generate $25,000 to $100,000 in tax savings through strategic deduction acceleration, income deferral, equipment purchases, retirement contributions, and entity election optimization. The critical window closes December 31, making pre-year-end planning essential.
This actionable checklist covers twenty essential tax planning moves business owners should execute between December 1 and December 31. Each item targets specific deduction acceleration or income deferral opportunities under IRC rules. Execution requires coordination with accountants, payroll processors, and tax advisors to meet tight deadlines.
1. Project Final Year Income and Tax Liability
December planning begins with accurate income projection. Calculate year-to-date business income, anticipated December earnings, and total projected annual income. Use this projection to determine whether aggressive deduction strategies will push you into lower tax brackets or whether deferral strategies are preferable. High-income business owners may benefit from deductions pushing them below the 37% federal bracket threshold, generating outsized tax savings.
2. Accelerate Bonus Payments to Employees and Family Members
Accrue and pay year-end bonuses to employees and family members by December 31 if using cash-basis accounting, or by December 31 if accrual basis (with payment within two-and-a-half months after year-end). Bonus deductions reduce current-year business income dollar-for-dollar. A $50,000 bonus deduction saves approximately $15,500 in federal income tax (37% bracket).
3. Maximize Retirement Plan Contributions
Contribute maximum allowable amounts to retirement plans before year-end. For 2024: Solo 401(k) contributions up to $69,000; SEP-IRA contributions up to 25% of net self-employment income; defined benefit plan contributions based on actuarial calculations. Contributions made by December 31 (or April 15 with extension) are deductible in the current year.
4. Implement or Increase S-Corp Reasonable Compensation
S-Corp owners can increase W-2 compensation in December to optimize payroll taxes and retirement contribution capacity. December salary increases trigger payroll taxes but generate deductions reducing taxable income. Coordinate compensation adjustments with retirement contribution capacity to maximize combined deduction benefit.
5. Claim Section 179 Expensing on Equipment Purchases
Purchase qualifying business equipment and claim full deduction under IRC Section 179 before December 31. Equipment must be placed in service (purchased and installed) by December 31 to qualify for current-year deduction. Equipment Section 179 deductions are limited to $1,220,000 (2024), providing substantial current-year deduction capacity.
6. Execute Bonus Depreciation Elections
Claim bonus depreciation on qualifying property placed in service before December 31. For 2024, 80% bonus depreciation is available on qualifying property. A $50,000 equipment purchase generates $40,000 bonus depreciation deduction immediately.
7. Review and Harvest Capital Losses
Identify investment losses and execute sales before December 31 to generate capital loss deductions offsetting investment gains. Capital loss harvesting allows deduction of up to $3,000 in net capital losses against ordinary income annually, with unlimited carryforward of excess losses to future years.
8. Make Charitable Contributions
Execute charitable contributions before December 31 to claim current-year deductions. Charitable contributions are deductible for business owners who itemize deductions. A $25,000 charitable contribution generates $9,250 in federal income tax savings (37% bracket).
9. Defer Income to Following Year
Delay client billings or invoice collection until January of the following year if using cash-basis accounting. Income is recognized when received under cash accounting, allowing December deferral of income earned in December until January receipt. This defers tax liability by one year on deferred income.
10. Accelerate Year-End Receivables Collection
Conversely, accelerate client billing and collection of outstanding receivables in December if higher current-year income is desired. Accelerated collection brings income forward for current-year recognition and taxation, useful if substantial deductions are available to offset the income.
11. Review and Adjust Quarterly Estimated Tax Payments
Evaluate whether fourth-quarter estimated tax payment adjustments are warranted based on year-end income projections. Overpaid estimates can be carried forward to the following year or claimed as refundable credits. Calculate safe harbor compliance to avoid penalty exposure.
12. Execute Entity Election Changes
If operating as C-Corp or partnership, evaluate S-Corp election effectiveness. S-Corp elections made by December 31 are effective January 1 of the following year, requiring Form 2553 filing by March 15. Conversely, prior S-Corp elections can be revoked before December 31 if preferable.
13. Make Cash Business Distributions
If distributing cash to business owners or partners, execute distributions before December 31 to reduce retained earnings and avoid accumulated earnings tax. Distributions reduce year-end retained earnings, potentially lowering accumulated earnings tax exposure (20% tax on retained earnings exceeding $250,000).
14. Fund Business Loans to Family Members
Establish business loans to family members with below-market interest rates under IRC Section 1274(a) to shift income to lower-bracket family members. December loan funding allows interest deduction for full year if simple interest calculation is implemented. Loans require promissory notes with specified interest rates and repayment schedules.
15. Review and Adjust Deduction Accruals
For accrual-basis businesses, review whether material deductions should be accrued in December for current-year deduction despite January payment. Accrued deductions must satisfy the "all events test": the liability must be fixed and the amount must be determinable with reasonable accuracy by year-end.
16. Execute Cost Segregation Studies on Real Estate
For real estate investors, execute cost segregation studies on properties placed in service during or before December. Studies must be completed by tax return filing deadline (March 15 with extension) and filed on Form 3115 amendment to claim depreciation benefits retroactively.
17. Make Qualified Small Business Stock Exclusions
If selling qualified small business stock held for over five years, confirm IRC Section 1202 exclusion eligibility (50% gain exclusion for small business stock). Section 1202 exclusion requires stock acquisition before December 31 and five-year holding period satisfaction.
18. Review Passive Activity Loss Limitations
Evaluate passive activity loss position and determine whether real estate professional status election or material participation demonstration enables deduction of otherwise suspended passive losses. Material participation documentation must be contemporaneous and filed with tax returns.
19. Execute Charitable Remainder Trust Funding
For high-income individuals with appreciated assets, charitable remainder trusts (CRTs) funded by December 31 generate immediate charitable deductions while providing income streams. CRTs require significant assets (minimum $100,000 typical) and complex legal documentation, requiring advance planning.
20. Document All Year-End Planning Decisions
Maintain contemporaneous documentation supporting all year-end tax planning decisions: business projections, deduction calculations, entity election filings, retirement contribution authorizations, equipment purchase orders, and charitable contribution receipts. This documentation becomes critical for audit defense if IRS questions year-end strategy implementation.
AE Tax Advisors provides comprehensive year-end tax planning analysis and implementation for business owners and real estate investors. Our team projects final-year tax liability, identifies optimization opportunities, executes year-end strategies, and documents all decisions for compliance. Schedule a consultation by November 1 to ensure adequate planning time before year-end deadlines.