Key Points
- Year-end 2025 tax planning focuses on using new OBBB rules for bonus depreciation, 100% expensing of qualified production property, R&D expensing, SALT, and estate exemptions to optimize multi-year results.
- Business owners should model PTE elections, multistate nexus, and capital and energy projects under the $40,000 SALT cap, EBITDA-based interest limits, and still available federal and state credits before December 31.
- High-net-worth families need to coordinate estate planning, charitable strategies, and clean financial data with their advisors. Hence, wealth transfer, liquidity, and entity planning align with the updated federal and state rules.
As we approach year-end, proactive tax planning is essential for closely held businesses, family offices, and high-net-worth families with complex structures. What makes 2025 different is that we are no longer planning against an uncertain sunset. The One Big Beautiful Bill Act (OBBB) locked in many of the significant rules that matter most and reshaped others in ways that create new planning windows and new areas of risk.
This guide focuses on the areas that can move the needle: entity-level planning, multi-state and SALT strategy, capital investment, R&D, interest limits, estate and wealth transfer, charitable timing, digital assets, international holdings, real estate, and operational readiness.
As you read, consider which ideas align with your situation and what actions need to be taken before December 31 for the strategy to be effective.
Significant Changes from the One Big Beautiful Bill and Why They Matter
OBBB reframed the tax landscape for both businesses and individuals. For years, tax planning revolved around what happens when the TCJA provisions expire. Now, many of those provisions have a longer runway, and others have been updated or made permanent. Several high-impact items that were scheduled to phase out have been extended or revised, including bonus depreciation, Section 179, R&D expensing, the SALT cap, and the federal estate and gift tax exclusion.
For business owners, this means planning is less about chasing short-term opportunities and more about intentionally sequencing income, deductions, and transactions under a predictable set of rules. Permanent 100% bonus depreciation for many assets, restored immediate expensing for domestic R&D, a higher federal estate exclusion, and more generous interest deductibility make year-end planning more strategic than reactive.
For a detailed provision-by-provision breakdown, see our firm’s article The One Big Beautiful Bill Becomes Law: A Detailed Tax Breakdown for 2025 and Beyond.
SALT, PTE Elections, and Multi-State Risk
SALT Cap and PTE Elections
The SALT deduction cap has increased to $40,000. For many high-tax state families, this provides relief but does not eliminate the need for planning. PTE tax elections remain one of the most essential tools for navigating the cap. The key is modeling. Elections must be evaluated by both the state and the owner, as resident credits differ significantly across states. In some situations, a PTE election can reduce federal tax but increase total state tax if the resident state does not recognize a credit for taxes paid at the entity level.
Before year-end, it is worth running multistate modeling that shows where PTE tax will be paid, who receives a resident credit, and how the higher SALT cap interacts with those decisions.
Nexus, Market Sourcing, and Stealth Exposure
States are increasingly using economic nexus and market-based sourcing standards to determine their tax obligations. If your customers receive the benefit of your product or service in a state, that state may claim the right to tax you even if you have never been physically present. This affects online businesses, subscription models, consulting and creative services, as well as companies selling nationwide.
State tax exposure also frequently appears in due diligence. Buyers are reducing purchase prices or requiring indemnities when they identify multistate issues that were never addressed. Nexus is no longer just a compliance topic. It impacts enterprise value.
For more insight into state and local issues for growing companies, see our firm’s article Proactive Tax Planning for Expanding Businesses.
Entity, Capital Investment, and Transaction Planning
Bonus Depreciation, Section 179, and Qualified Production Property
OBBB permanently restored 100% bonus depreciation for many qualifying assets placed in service after 2017. Section 179 expensing remains generous, and specific qualified production property now qualifies for 100% bonus depreciation as well. These tools create powerful levers for shaping taxable income, but they require thoughtful timing. Placing a significant asset in service in a lower-income year may not be the best long-term move. Instead, model capital expenditures across several years to understand how bonus depreciation, Section 179, and immediate expensing of qualified production property interact with projected taxable income, cash flow, and future capital needs.
Research and Development Expensing and Credits
The restoration of immediate expensing for domestic R&D costs makes 2025 a vital reset year. Projects that were deferred when amortization rules became unfavorable may now be worth revisiting. Businesses that had higher taxable income from 2022 to 2024, due to R&D being capitalized, may benefit from reviewing their approach in the future.
R&D credits and R&D expensing work together, so documentation, project identification, and timing all matter. For more background on the credit side, see our firm’s article Now is the time to revisit the R&D Tax Credit.
Section 163(j) Interest Limitations
Section 163(j) now limits interest deductions based on 30% of EBITDA rather than EBIT. This more generous formula provides leveraged businesses with significantly more room to deduct interest expenses. Companies with acquisition debt, real estate debt, or intercompany loans should review their prior projections to determine whether previously limited interest can now be absorbed.
QSBS and Opportunity Zones
Qualified Small Business Stock remains one of the most powerful long-term tax planning tools for founders and early investors. The OBBB enhancements only increase its value. Confirm QSBS status early because eligibility cannot be fixed retroactively when a sale is already underway. For more details, see our firm’s article Planning with Qualified Small Business Stock.
At the same time, the extension of Qualified Opportunity Zone provisions has created renewed planning opportunities for deferring gains and potentially reducing tax on future appreciation. These tools are not right for everyone and require careful attention to the project’s quality and timelines, but they can be valuable in the right circumstances.
Individual Level Planning Under the New Rules
Bunching Itemized Deductions
With higher standard deductions in 2025 and a SALT cap of $40,000, many high-income households find that their itemizable expenses fall near the standard deduction in a typical year. In that case, bunching remains a practical strategy. By accelerating property taxes, mortgage payments, medical procedures, or charitable contributions into 2025, you may exceed the standard deduction this year and then use the standard deduction in 2026 when it increases again for inflation.
Mortgage interest caps, the SALT limit, and possible AMT exposure all need to be considered when using this strategy.
Employing Family Members
Employing family members in legitimate roles can shift income into lower brackets and create earned income that supports IRA or Roth contributions. Paying children for honest work at reasonable wages can help fund education, savings, or down payments without relying solely on gifts. Employing a spouse can also help build Social Security credits and retirement contributions, even if there is no significant rate benefit.
Compensation must accurately reflect actual responsibilities, hours should be accurately documented, and pay must be processed through normal payroll with proper withholding. The IRS expects real work, real wages, and real records.
Senior Deduction and Retirement Planning
Beginning in 2025, taxpayers age 65 and older qualify for an additional deduction amount. This applies whether or not you itemize and can help offset income spikes from Roth conversions, IRA withdrawals, or large charitable gifts. Strategic coordination can create meaningful benefits in retirement years. For more, see our firm’s article Tax Smart Retirement Planning for Business Owners.
Charitable Giving Strategy: Timing, Structures, and QCDs
Charitable giving remains a practical way to align tax strategy with personal values. If your itemized deductions are close to the standard deduction, bunching multiple years of charitable giving into 2025 may unlock a larger benefit. Donor-advised funds allow you to claim the deduction now while distributing grants in future years.
For appreciated securities held more than one year, donating the shares rather than selling them allows you to deduct the full value without recognizing taxable gain. For taxpayers aged 70 1/2 or older, Qualified Charitable Distributions from IRAs remain one of the most efficient ways to satisfy required minimum distributions without increasing adjusted gross income.
Estate, Wealth Transfer, and Succession Updates
Estate and Gift Exclusions
The federal estate and gift tax exclusion will be $15 million per person and $30 million per couple in 2026. This higher level reduces the urgency that surrounds the expected drop, but it does not eliminate the need for planning. For many owners, the value of closely held businesses, real estate, and investments still exceeds the exclusion.
This remains a strong window for using techniques that move future appreciation out of the estate while maintaining access and flexibility. Massachusetts residents must also be aware of state-level changes, including the $2 million exemption, the elimination of the cliff, and the exclusion of out-of-state real estate and tangible personal property for residents. See our firm’s article Estate Planning for 2025 and Beyond for additional details.
Annual Exclusion Gifts and Asset Choices
The annual gift exclusion of $19,000 per recipient allows families to gradually shift value and future appreciation out of the estate. It often makes sense to gift assets with higher growth potential to recipients in lower tax brackets. Avoid gifting assets with built-in losses, as those losses may be eliminated under gift basis rules. In such cases, the donor is typically better off selling the asset, recognizing the loss, and then gifting the cash. Additionally, assets with a significant unrealized gain may not be the best choice for gifting unless there is an expectation to sell the asset before the donor’s death.
Trust Distribution Timing
The 65-day rule is a valuable tool for trustees of complex trusts. It allows certain distributions made early in the year to be treated as if they occurred in the prior year. This helps manage the overall tax burden between the trust and its beneficiaries. Our firm’s article, The 65 Day Rule: A Strategic Tax Planning Tool for Trusts, outlines when this strategy is appropriate.
Succession Planning, COLI, and Buy-Sell Agreements
The Supreme Court’s ruling in Connelly v. United States confirmed that corporate-owned life insurance used to fund redemption agreements must be included in the owner’s estate for valuation purposes. This may increase estate tax exposure and can create liquidity mismatches if agreements were drafted under different assumptions. Owners should review stock redemption agreements, cross-purchase arrangements, and entity-owned life insurance to ensure that the intended outcomes still align with current rules.
Digital Assets and IRS Reporting
Beginning with 2025 filings, expect expanded reporting requirements for broker-level transactions involving digital assets. For active investors and family offices, digital assets now intersect with K-1 reporting, foreign accounts, and entity structures. year-end is the time to gather complete records, including exchange statements, wallet histories, and basis schedules. The IRS is prioritizing this area, and accurate documentation is crucial for ensuring compliance and effective planning.
International Considerations for U.S. Owners
U.S. owners with significant interests in foreign entities may be subject to current taxation on undistributed earnings under Subpart F or GILTI-style rules. OBBB raised effective tax rates on certain types of foreign income, which increases the importance of reviewing global structures. Before acquiring interests overseas or entering cross-border joint ventures, it is crucial to understand how these structures will be taxed under U.S. tax rules. Early planning can prevent costly surprises.
Real Estate, Property Taxes, and Energy-Related Incentives
Bonus Depreciation
The reinstatement of 100% bonus depreciation under the OBBB is the primary planning point for real estate owners heading into year-end. Any new acquisitions, significant capital improvements, or development projects placed in service on or after the applicable effective date may qualify for substantial first-year federal deductions.
For many investors, this is the most meaningful tax change of the year. Clients are increasingly modeling acquisitions and timing construction projects to maximize these accelerated deductions. Cost segregation remains a powerful companion strategy, and the return of full bonus depreciation heightens its value.
Property Tax Assessments and Appeals
Property taxes remain one of the most significant recurring expenses for property owners. Assessed values can lag real market conditions, especially in shifting commercial markets. Reviewing assessments before year-end can identify opportunities to appeal values or seek corrections that reduce future carrying costs.
1031 Exchanges and the Growing Use of Delaware Statutory Trusts (DSTs)
Like-kind exchanges remain a foundational planning tool for deferring gain on the sale of investment real estate. In addition to traditional property-for-property exchanges, investors are increasingly exploring the use of Delaware statutory trusts (DSTs) as part of their 1031 strategy.
DSTs can offer access to institutional-grade properties, passive management, and simplified replacement options for investors who want to complete an exchange but do not wish to incur the ongoing operational burden of direct ownership. We continue to receive more client questions about how DSTs work and when they are appropriate.
Electronic Payments
The federal government continues to transition away from paper checks for refunds and tax payments and toward electronic payments and electronic deposits. While this can speed up processing, it also increases the risk of exposure to scams. Fraudsters are sending fake portal invitations, fraudulent refund notices, and bogus bank verification requests. It is essential to verify unexpected communications through known channels and avoid clicking links in unsolicited messages.
Accounting Operational Readiness: A note from our Client Accounting Advisory Team
Clean, timely, and accurate accounting records remain the foundation for every strategy in this guide. When books are not reconciled or intercompany accounts are out of balance, it becomes difficult to model PTE elections, interest limitations, capital investments, or cash flow needs with confidence. Accurate financials are also essential for making informed decisions about the coming year, including budgeting, staffing, and evaluating tax elections that may influence future results.
Year-end is the ideal time to begin planning next year’s budget, and those plans are only as firm as the information you rely on. Client Accounting Services can help maintain real-time records, strengthen controls, and support secure electronic payment workflows. Forward-looking financial information, such as rolling forecasts, also supports more proactive tax planning and better strategic decision-making. For more, see our firm’s article Future Proof Your Business with Rolling Forecasts.
Final Thoughts: When to Call Your Advisor
OBBB created a more stable tax environment, but stability does not mean simplicity. For owners with multistate operations, complex entities, foreign holdings, or significant wealth transfer goals, decisions made before year-end can still have six- or seven-figure consequences.
The most effective planning is coordinated planning. It brings together entity structure, state strategy, capital investment, R&D, interest limitations, charitable giving, trust planning, succession agreements, property taxes, international holdings, and financial operations. Now is the time to meet with your CPA and advisory team to review your 2025 results and prioritize the key actions that will make the most significant difference in achieving your goals.
Frequently Asked Questions (FAQ’s)
- What are the most critical year-end tax moves for business owners under the One Big Beautiful Bill?
The key moves are aligning capital spending with permanent 100% bonus depreciation and expensing of qualified production property, revisiting R&D expensing and credits, and modeling interest deductions under the updated Section 163(j) rules. Multistate SALT exposure, PTE elections, and updated estate exemptions should also be reviewed before December 31. - How does the new $40,000 SALT cap affect my decision to make a PTE election?
The higher SALT cap offers more deduction room but does not replace the value of a well-modeled PTE election. You still need to evaluate state-by-state rules to avoid situations where resident credits are limited and total state tax increases. - Should I employ or compensate family members differently for tax purposes?
Employing family members can shift income into lower brackets and support retirement contributions when the work and pay are legitimate. year-end is a good time to confirm roles, compensation, and documentation to ensure the arrangement meets IRS expectations. - How do digital assets and foreign business interests affect my year-end planning?
Digital asset holders should gather complete transaction records before new reporting rules take effect in 2025. Owners of foreign entities must evaluate whether undistributed earnings are currently taxable and whether OBBB changes have increased their adequate tax exposure.