A Quick Start Guide to Year End Tax Planning

Key OBBBA Tax Law Changes and Deadlines

The passage of the One Big Beautiful Bill Act brought significant structural shifts to federal tax rules. Many major changes alter how we approach year end tax planning for both business operations and personal wealth management. Key updates permanently extended several provisions that were set to sunset while expanding specific deduction limits for the 2025 tax year.

For instance, the standard deduction for 2025 rises to $15,750 for single filers and $31,500 for married couples filing jointly. Meanwhile, the state and local tax deduction cap increases temporarily to $40,000 for 2025, offering a distinct window to accelerate state tax payments before December 31.

Essential Deadlines for Year End Tax Planning

Meeting strict IRS timing rules is critical to securing your tax savings. Certain moves require completed fund transfers or formal elections before the clock strikes midnight on December 31.

• Retirement contributions to employer plans like 401k accounts must be completed via payroll by December 31. The 2025 maximum contribution limit is $23,500, with an extra catch-up contribution of $7,500 for those aged 50 and older. Taxpayers aged 60 to 63 can take advantage of a special super catch-up limit of $11,250, bringing their total employee contribution cap to $34,750.
• Individual Retirement Account contributions allow funding up to $7,000 for 2025, plus a $1,000 catch-up for individuals age 50 or older. Traditional and Roth IRA contributions can be funded until the tax filing deadline in April.
• Required Minimum Distributions for traditional IRAs and 401k plans must be taken by December 31 to avoid severe penalties.
• Qualified Charitable Distributions allow account owners age 70 and a half or older to transfer up to $105,000 directly from an IRA to a qualified charity by December 31, satisfying RMD requirements without adding to reported income.
• The annual gift tax exclusion allows gifts up to $19,000 per recipient for single donors or $38,000 for married couples without reducing lifetime exemptions, provided transfers finish by December 31.

Understanding these milestones allows us to coordinate with our clients through our no-fluff, profit-first playbook, ensuring complete peace of mind well before tax deadlines arrive.

Major OBBBA Provisions for Taxpayers

The OBBBA introduced several targeted tax deductions that impact individual tax returns for 2025 and beyond. Understanding these provisions helps us structure your year-end decisions to lower taxable income.

The legislation introduced dedicated deductions for tipped workers up to $25,000 and qualified overtime pay up to $12,500 for single filers or $25,000 on joint returns. Eligible seniors aged 65 and older can access a senior deduction of up to $6,000, subject to income phaseout ranges between $75,000 and $175,000 for single taxpayers. Additionally, a new deduction allows up to $10,000 in car loan interest for qualifying domestic vehicle purchases.

We also focus on multiyear timing because the OBBBA modifies itemized deduction rules starting in 2026. Reviewing these changes with effective Strategies to Minimize Taxes ensures you maximize 2025 tax breaks before new caps take effect next year.

Strategic Year End Tax Planning for Income and Deductions

Managing when you receive income and when you pay deductible expenses is one of the most effective tools in year end tax planning. By analyzing current tax brackets alongside projected income for next year, we can decide whether to defer income into January or pull deductible payments forward into December.

For creative entrepreneurs and small business owners using cash-basis accounting, deferring revenue can be as simple as sending customer invoices in late December so payments arrive in the new tax year. On the expense side, prepaying business rent, software subscriptions, or professional insurance in December can accelerate valuable tax deductions into the current tax year.

Harvesting Capital Losses and Navigating Wash Sale Rules

Market volatility creates prime opportunities to trim taxable gains across your investment accounts. Tax-loss harvesting involves selling underperforming assets at a loss to offset taxable capital gains realized earlier in the year.

Excess capital losses can offset up to $3,000 of ordinary income each year, with remaining unused losses rolling over indefinitely into future tax years. Year-to-date data shows over 400 stocks in the S&P 500 experienced drawdowns of 5% or more despite positive market trends, providing clear targets for portfolio rebalancing.

When harvesting losses, you must carefully navigate the IRS wash sale rule. This rule denies the tax deduction if you purchase a substantially identical security within 30 days before or after the sale. If you wish to maintain market exposure while claiming the tax loss, you can purchase an ETF covering the same sector or wait full 31 days before repurchasing the original security.

Maximizing Charitable Donations and Bunching Expenses

Charitable giving remains a cornerstone of year end tax planning, but upcoming tax law shifts make 2025 a pivotal year for philanthropic actions. Under the OBBBA, beginning in 2026, allowable itemized charitable deductions are reduced by 0.5% of Adjusted Gross Income, and total itemized deductions are capped at 35% for taxpayers in the 37% tax bracket.

Front-loading charitable gifts into 2025 avoids these upcoming restrictions. Taxpayers can utilize a Donor-Advised Fund to make a large deductible gift in 2025, claim the full itemized deduction immediately, and distribute grants to specific charities over future years.

Bunching itemized deductions involves combining two years of charitable contributions, medical expenses, or state tax prepayments into a single calendar year to exceed the standard deduction threshold.

To review a broader list of actionable tax strategies, visit our guide on Tax-Saving Moves You Can Make Before Year-End.

Tax Strategies for High Earners and Business Owners

High-income individuals and business owners face unique challenges that require proactive tax strategy before December 31. As taxable income grows, taxpayers run into higher marginal tax brackets, phaseouts of key deductions, and potential exposure to the Alternative Minimum Tax.

Managing your liability requires balancing personal taxable income with business deductions. Using a structured playbook helps prevent high tax bills while maintaining healthy business cash reserves. Explore our comprehensive guide on Business Year End Tax Planning to learn how entity structuring impacts your taxable income.

Advanced Year End Tax Planning for Business Owners

Business owners have powerful options to accelerate deductions before the calendar year closes. The OBBBA permanently established 100% bonus depreciation for qualifying short-life assets, allowing businesses to immediately deduct the full purchase price of equipment, technology, and machinery placed in service by December 31.

The law also reinstated immediate expensing for domestic research and development expenditures, eliminating the requirement to amortize domestic R&D costs over five years. Combining bonus depreciation with Section 179 expensing gives business owners maximum control over net business income.

• Purchase and place in service necessary machinery, studio equipment, or vehicles before December 31 to claim 100% bonus depreciation.
• Fully deduct domestic software development and R&D expenses incurred during the current tax year.
• Review year-to-date income to adjust fourth-quarter estimated tax payments, avoiding underpayment penalties while preventing overpayment.
• Establish self-employed retirement accounts like Solo 401k plans or SEP IRAs before year-end to unlock large tax-deductible contribution options.

Reviewing these deductions helps keep your business tax-efficient and aligned with long-term profit goals. To explore more practical ideas, check out our resource on How to Save on Taxes.

Wealth Transfer and Compensation Planning Strategies

High earners and corporate executives should carefully manage variable compensation and long-term estate transfers before December 31. For executives holding incentive stock options or non-qualified stock options, exercising options requires deliberate timing to prevent unexpected AMT triggers.

Strategic moves for high earners include several key actions.

1. Deferring year-end performance bonuses or non-qualified deferred compensation into the next tax year if you expect lower future income.
2. Exercising stock options in a calculated manner across tax years to avoid triggering higher marginal tax rates or AMT liability.
3. Maxing out high-deductible health plan HSA contributions up to $4,400 for individual coverage or $8,750 for family coverage to enjoy triple tax benefits.
4. Utilizing the annual gift tax exclusion of $19,000 per recipient to move assets out of your taxable estate tax-free.
5. Leveraging the lifetime gift and estate tax exclusion, which stands at $13.99 million per individual for 2025 and increases to $15 million in 2026 under the OBBBA.

Working through these complex decisions is easier when you have a clear plan.

Frequently Asked Questions About Year End Tax Planning

What is the wash sale rule in portfolio management

The wash sale rule is an IRS regulation that prevents investors from claiming an immediate tax deduction for a security sold at a loss if they purchase a substantially identical security within 30 days before or after that sale.

If you violate the wash sale rule, the disallowed loss is added to the cost basis of the newly purchased security, postponing the tax benefit until you sell the new asset. To avoid this outcome while executing tax-loss harvesting, you can invest in a substitute asset with similar market exposure or wait at least 31 calendar days before repurchasing the original security.

How does the OBBBA change charitable deductions

The One Big Beautiful Bill Act creates permanent tax changes that influence charitable strategies for 2025 and 2026. For the 2025 tax year, taxpayers can deduct qualifying charitable gifts up to existing AGI percentage limits without new legislative caps.

Starting in 2026, the OBBBA reduces allowable itemized charitable deductions by 0.5% of Adjusted Gross Income for itemizers. It also limits the tax value of itemized deductions to 35% for individuals in the highest 37% marginal tax bracket. Making large philanthropic contributions or funding Donor-Advised Funds in 2025 allows donors to avoid these upcoming restrictions.

What happens if an RMD deadline is missed

If you fail to take a Required Minimum Distribution from a traditional IRA or 401k by the December 31 deadline, the IRS imposes an excise tax penalty equal to 25% of the unwithdrawn required amount.

This excise penalty can be reduced to 10% if you correct the missed distribution promptly and file Form 5329 within two years. To prevent this severe penalty, account owners over age 73 should audit their retirement accounts early in December or set up automated distribution schedules with their financial custodians.

Conclusion

Effective year end tax planning is not about rushing to make last-minute decisions on December 30. It is about taking a calm, structured look at your numbers so you can protect your hard-earned profits and keep your focus on what you build best.

At Core Group, we help creative entrepreneurs and business owners replace tax guesswork with clarity. Our profit-first playbook delivers practical guidance and complete peace of mind, backed by our MacBook Pro guarantee. By organizing your records, maximizing your deductions, and taking advantage of updated tax rules before December 31, you set your business up for a prosperous year ahead.

Ready to build a customized year-end plan? Explore our comprehensive Tax Planning Resources or connect with our team to start your personalized strategy today.