Year-end tax planning moves for families and business owners

Tax planning is fundamentally different from tax preparation. Tax preparation looks backward at transactions that have already occurred, organizing figures to comply with federal and state reporting requirements. Tax planning, by contrast, looks forward while the tax year remains open, evaluating strategic choices that can alter the final tax obligation before midnight on December 31.

For small business owners and high-income households in New Jersey, waiting until filing season in April eliminates most legal mechanisms for tax reduction. Once the calendar year ends, options become narrow. Implementing thoughtful planning steps in the final quarter allows business owners and individuals to align their cash flow, asset purchases, and compensation structures with current tax laws.

1. Optimize S-Corporation Compensation and Elect New Jersey PTET

Owner-operators of S-Corporations must balance shareholder distributions with reasonable compensation paid as W-2 wages. The Internal Revenue Service requires S-Corporation owners who provide substantial services to receive reasonable wages subject to FICA taxes (Social Security and Medicare) before taking tax-favored distributions. Setting wage levels too low creates exposure during an IRS audit, while setting them unnecessarily high increases self-employment tax obligations.

Year-end represents the final opportunity to adjust your payroll mix. Review your business's net profits for the year and ensure that your total W-2 salary aligns with industry standards for your role, geographical area, and time commitment. Any necessary payroll corrections must be executed through your payroll provider before year-end tax forms are locked.

For New Jersey pass-through entities—including S-Corporations and Partnerships—the New Jersey Pass-Through Entity Tax (PTET) remains one of the most effective local tax strategies. Federal tax law caps the individual itemized deduction for State and Local Taxes (SALT) at $10,000. Under the NJ PTET program, the entity pays state income tax directly on its net income at the entity level. The business deducts this tax payment on its federal return as an ordinary business expense, effectively bypassing the $10,000 SALT cap for its owner. Members then receive a corresponding tax credit on their New Jersey individual income tax returns. Electing and funding the PTET prior to December 31 is critical for cash-basis taxpayers seeking to capture the federal deduction in the current tax year.

2. Evaluate Retirement Contributions and Plan Deadlines

Retirement contributions offer a dual benefit: building long-term wealth while reducing current-year taxable income. However, the operational rules and setup deadlines vary by account type.

• Solo 401(k): For self-employed individuals without non-spouse employees, a Solo 401(k) allows high contribution limits by combining employee elective deferrals with employer profit-sharing contributions. To make employee deferrals for the current tax year, the plan document must be formally established by December 31. Actual cash funding for the employer portion can occur up to the business's tax filing deadline, including extensions.
• SEP IRA: Simplified Employee Pension plans provide flexibility for business owners whose income fluctuates. A SEP IRA can be both established and funded up to the tax filing deadline (including extensions). However, because contributions are strictly employer-side and calculated as a percentage of compensation, business owners should run preliminary tax calculations at year-end to determine the appropriate funding level.
• Employer-Sponsored 401(k) Deferrals: W-2 employees, including business owners drawing a salary, must complete their elective deferrals via payroll before December 31. Contribution limits cannot be caught up retroactively in the following year.

3. Review Equipment Purchases and Depreciation Rules

Business owners planning to purchase equipment, machinery, vehicle assets, or software should consider the operational timing of those expenditures. Under Section 179 of the Internal Revenue Code, businesses may elect to expense the full purchase price of qualifying equipment in the year it is placed in service, rather than depreciating it over multiple years.

Crucially, the rule requires that the asset be purchased and placed in service—meaning fully operational and available for business use—on or before December 31. Purchasing equipment on December 31 that remains in a box or undelivered until January does not qualify for current-year tax expensing. Additionally, business owners should evaluate bonus depreciation rules, which are subject to annual phase-down percentages under federal law, making current-year placement in service even more critical.

4. Harvest Capital Losses and Manage Equity Compensation

For individuals with taxable investment accounts or equity compensation—such as Restricted Stock Units (RSUs), Incentive Stock Options (ISOs), or Non-Qualified Stock Options (NSOs)—year-end is the time to review realized capital gains and losses.

Tax-loss harvesting involves selling underperforming investments at a loss to offset realized capital gains. Capital losses offset capital gains dollar-for-dollar. If capital losses exceed capital gains, individuals can deduct up to $3,000 of excess losses against ordinary income on their federal tax return, carrying forward any remaining balance to future tax years. Care must be taken to avoid the IRS wash-sale rule, which disallows the tax deduction if a substantially identical security is purchased within 30 days before or after the sale.

For employees with ISOs, exercising options without selling the underlying stock in the same tax year can trigger Alternative Minimum Tax (AMT) liability based on the spread between the grant price and the fair market value at exercise. Reviewing your exercise history before December 31 helps prevent unexpected AMT liabilities when filing in the spring.

What to Do Next

Tax planning yields the best results when numbers are analyzed in context rather than assumed. Every business structure and household financial profile involves distinct trade-offs between cash flow, state requirements, and federal limits.

To review your year-end tax position, evaluate S-Corp salary structures, or optimize state PTET elections before December 31, book a 15 Minute Discovery Call with Andrew Chen CPA LLC.