Preparing for Property Tax Changes in 2027

7 September 2026

If you own real estate, 2027 is not a distant horizon. It is the year when several major property tax adjustments are scheduled to take effect across the United States, driven by the expiration of key provisions from the 2017 Tax Cuts and Jobs Act (TCJA). For many owners, the changes will mean higher tax bills, more complex compliance, and a need to rethink long-held assumptions about property holding structures. The time to act is now, not in late 2026 when the market will be flooded with panicked sellers and rushed advisors.

This article is not a summary of proposed legislation. It is a practical guide to the specific, predictable shifts that will affect how your property is valued, depreciated, and taxed. We will walk through the most significant changes, the traps that catch even experienced investors, and the strategies that actually work in this environment.

The Sunset of the TCJA: What Actually Changes

The TCJA was a sweeping tax overhaul, but many of its individual provisions were written with built-in expiration dates. The most impactful for property owners are the changes to the state and local tax (SALT) deduction cap, the expansion of bonus depreciation, and the treatment of like-kind exchanges under Section 1031. None of these expire in a vacuum. Their removal will interact with existing state tax laws, inflation adjustments, and your personal financial situation in ways that are easy to underestimate.

The SALT Cap and Its Hidden Impact

The $10,000 cap on the deduction for state and local taxes (income or property taxes, but not both combined) was a central feature of the TCJA. It is set to expire at the end of 2025, which means that for tax year 2026, the cap would no longer apply. However, the political reality is that this expiration is not automatic in the way many assume. Congress is likely to act, but the question is whether they will extend the cap, modify it, or let it lapse entirely. For 2027 planning, you must prepare for all three scenarios.

If the cap disappears, high-tax states like California, New York, and New Jersey become more attractive for property owners from a federal deduction standpoint. But do not make the mistake of assuming that a higher federal deduction means a lower total tax burden. Many states have their own limitations on how they treat federal itemized deductions. Some states, like Connecticut, have a "decoupling" mechanism that means your state taxable income will not automatically align with the federal changes. You could end up with a federal benefit that is partially or fully clawed back at the state level.

The practical advice here is to run a detailed projection for your specific county and state. Do not rely on generic online calculators. A property in Texas with no state income tax but high property taxes will respond differently to the SALT cap expiration than a property in Oregon with high income tax but relatively moderate property tax rates. The interaction between your property tax bill and your income tax bill is where the real planning opportunity lies.

Bonus Depreciation: The End of the Fast Lane

The TCJA allowed for 100% bonus depreciation on qualified property placed in service after September 27, 2017, and before 2023. That percentage has been phasing down: 80% for 2023, 60% for 2024, 40% for 2025, and 20% for 2026. After 2026, bonus depreciation drops to zero unless Congress acts. This is a massive shift for commercial real estate owners who have relied on cost segregation studies to accelerate depreciation on building components, land improvements, and personal property.

For 2027, the default will be straight-line depreciation over 27.5 years for residential rental property and 39 years for nonresidential commercial property. The loss of bonus depreciation means that a $1 million cost segregation study that previously allowed you to write off $200,000 or more in the first year will now only give you a fraction of that benefit. The cash flow impact is immediate and severe for investors who were counting on that deduction to offset rental income.

Here is the nuance that most advisors miss. The phase-down is already in effect. If you are planning a major renovation or a new build, the tax year in which you place the asset in service is what matters. A project that is completed in December 2026 will still qualify for 20% bonus depreciation. A project that is delayed by two months and placed in service in January 2027 will get zero. This creates a powerful incentive to accelerate construction schedules, but it also creates a trap. Rushing a project to meet a tax deadline can lead to shoddy work, permit issues, and higher long-term costs that dwarf the tax benefit. You must weigh the value of the remaining 20% bonus against the risk of a botched project.

Section 1031 Exchanges: The Uncertainty Is the Problem

Section 1031 allows you to defer capital gains tax by reinvesting the proceeds from a sale into a like-kind property. The TCJA did not eliminate this provision for real property, but it did eliminate it for personal property, such as equipment and vehicles. The current law is clear for real estate, but there is persistent talk of limiting or repealing 1031 for high-value transactions to raise revenue.

For 2027, the realistic risk is not a full repeal but a cap. There have been proposals to limit the deferral to $500,000 of gain per taxpayer per year. If that were to pass, it would fundamentally change the economics of a "buy and hold" strategy for investors with large appreciated assets. The problem is that you cannot plan around a law that does not exist yet. What you can do is structure your current transactions so that you are not solely dependent on the 1031 exchange for your exit strategy.

A better approach is to consider a "swap and hold" strategy where you sell a property, pay the tax, and reinvest in a larger asset with better financing terms. Yes, you lose the deferral, but you reset your basis, which reduces future taxable gains. In a high-interest-rate environment, the cost of capital may be lower than the tax cost of waiting. This is a counterintuitive point that many investors refuse to accept, but the math often works in your favor when you factor in the time value of money and the potential for future tax rate increases.

The Assessment Cycle: Why Your Bill Will Change Even Without New Laws

The federal tax code is only half the story. Property taxes are levied at the local level, and the assessment cycle is not synchronized with the federal calendar. Many jurisdictions are in the middle of a multi-year reassessment cycle that will peak in 2027. This is not a coincidence. The last major reassessment wave was in 2019-2020, driven by the post-recession recovery. Those assessed values were based on sales data from 2017-2018. The next wave will be based on the inflated sales prices from 2021-2022, which were at the peak of the market.

If you bought a property in 2021 or 2022, you likely paid a premium. Your local assessor will use that sale price as the basis for your assessed value in the next cycle. This means your property tax bill could increase by 20% to 40% or more, even if the market value has since stabilized or declined. The mistake is to assume that your tax bill tracks the current market. It does not. It tracks the lagged market, and the lag is working against you right now.

The Appeal Process Is Not Optional

Most property owners never appeal their assessment. They assume the assessor is correct, or they believe the process is too complicated. This is a costly error. In many jurisdictions, the success rate for appeals is over 40% when the owner provides credible evidence. The key is to use recent sales of comparable properties, not just your own opinion of value. You need to build a case based on data.

Start by reviewing your property record card. This is the document the assessor uses to track your property's characteristics, such as square footage, number of bedrooms, and condition. Errors are common. A missing bathroom, an incorrect lot size, or a failure to account for a sloping backyard can result in an inflated assessment. Fixing these errors is often a simple administrative process that does not require a formal hearing.

For a formal appeal, you need to show that your assessed value is above the market value as of the assessment date. This is where timing matters. You cannot appeal based on today's market conditions if the assessment was set six months ago. You need to use sales data from the period around the assessment date. This is why you should start gathering data now for an appeal that you will file in 2026 for the 2027 tax year. The sales data you collect today will be stale by then, so you need to set up a system for tracking sales in your neighborhood on a monthly basis.

The Homestead Exemption and Other Relief Mechanisms

Many states have homestead exemptions that reduce the taxable value of your primary residence. These exemptions are often indexed to inflation or to the rate of change in home values. In a high-appreciation environment, these exemptions can become less effective over time. Some states, like Florida, have a "Save Our Homes" provision that caps annual assessment increases at 3% for homestead properties. This is a powerful protection, but it creates a problem when you sell. The buyer does not inherit your cap. Their assessment will be based on the full market value, and they will face a tax bill that is significantly higher than what you were paying.

If you are planning to sell a homestead property in 2027, you need to prepare the buyer for this reality. It is not uncommon for the new owner's tax bill to be double or triple the previous owner's bill. This affects the buyer's ability to qualify for a mortgage, and it can be a negotiating point. You should be transparent about the assessed value and the expected tax increase, or you risk a post-closing dispute.

Strategies for 2027: What to Do Now

The most important thing you can do in 2025 is to run a comprehensive tax projection that models multiple scenarios. Do not assume that the current law will remain in place. Build a spreadsheet that shows your tax liability under three scenarios: current law with the SALT cap extended, current law with the SALT cap expired, and a scenario with a partial 1031 repeal. This will give you a range of outcomes and help you identify which decisions are robust across all scenarios.

Reconsidering the Pass-Through Entity Structure

The TCJA created a 20% deduction for qualified business income (QBI) from pass-through entities like S corporations and LLCs. This deduction is set to expire after 2025. For real estate investors, the QBI deduction is often limited by the type of business. Rental income generally qualifies if you are actively involved in the management of the property, but the rules are complex. If the QBI deduction disappears, there will be a renewed interest in converting to C corporations, which have a flat 21% tax rate.

This is a major structural decision. A C corporation offers lower tax rates on retained earnings, but it creates double taxation when you distribute dividends. For a real estate investor who plans to reinvest all income, a C corporation can be attractive. For an investor who needs cash flow, it is a poor choice. The decision also affects your ability to take advantage of the capital gains rate on the sale of the property. A C corporation does not qualify for the 20% long-term capital gains rate on the sale of its assets. You would be taxed at the corporate rate, and then again when you distribute the proceeds.

The better approach for most investors is to maintain a pass-through structure but to be more aggressive about taking deductions now. This is the time to accelerate any planned capital improvements, because the depreciation benefit will be lower in 2027. If you have been postponing a roof replacement or an HVAC upgrade, do it before the end of 2026. The deduction will be worth more now, and it will reduce your taxable income in the years when the TCJA provisions are still in effect.

The Role of Cost Segregation Studies

A cost segregation study is an engineering-based analysis that reclassifies building components from 39-year or 27.5-year property to 5-year, 7-year, or 15-year property. This accelerates depreciation and creates larger deductions in the early years of ownership. With bonus depreciation phasing out, the value of a cost segregation study is changing.

In 2025, a cost segregation study can still produce a significant benefit because of the 40% bonus depreciation on the 5-year and 7-year property. In 2027, with no bonus depreciation, the benefit of cost segregation is reduced to the time value of money from accelerated straight-line depreciation. It is still worthwhile, but the return on investment is lower. If you have not done a cost segregation study on a property you acquired in the last few years, you may still be able to do a "catch-up" study. This allows you to claim the missed depreciation in the current year, but you will not be able to apply bonus depreciation to the catch-up amount if the property was placed in service before the bonus depreciation rules changed.

The mistake is to assume that a cost segregation study is only for new purchases. It can be applied to existing properties, and it can be retroactive. However, the IRS requires that you use a "change in accounting method" (Form 3115) to claim the additional depreciation. This is not a simple process, and it requires the assistance of a qualified tax professional.

Financing Considerations in a Higher Tax Environment

Property taxes are a lien on your property. If your tax bill increases by 30%, your debt service coverage ratio (DSCR) will decline. This can affect your ability to refinance or obtain new financing. Lenders typically require a DSCR of at least 1.25 for commercial properties. If your net operating income (NOI) is flat but your property taxes increase, your DSCR will fall below the lender's threshold.

This is a hidden risk for 2027. Many owners are focused on interest rates, but property tax increases can be just as damaging to your cash flow. You need to stress-test your financing assumptions. If your property tax bill increases by 25%, can you still cover your debt service? If not, you need to consider setting aside reserves now or negotiating a new lease structure that passes through property tax increases to tenants.

In commercial leases, the "net lease" structure passes property taxes to the tenant. But this only works if the tenant is creditworthy and if the lease language is clear. Many net leases have caps on annual increases, and those caps may be lower than the actual increase in your property taxes. You need to review your lease agreements and identify any properties where the tax increase will exceed the cap. In those cases, you will absorb the difference, which reduces your NOI.

Common Misconceptions That Will Cost You

There is a widespread belief that property tax increases are inevitable and cannot be controlled. This is false. You can control your assessment through appeals, you can control your taxable income through deductions, and you can control your structure through entity selection. The problem is that most owners are reactive. They wait for the tax bill to arrive and then panic.

Another misconception is that the 2027 changes only affect high-income investors. The SALT cap expiration, if it happens, will benefit high-income taxpayers in high-tax states. But the loss of bonus depreciation will hurt small landlords who own a single rental property. A $300,000 duplex that was purchased in 2025 will have a much smaller depreciation deduction in 2027 than it would have had under the old rules. This will increase taxable income and potentially push a modest-income landlord into a higher bracket.

Finally, do not assume that your tax preparer will proactively plan for these changes. Many accountants are busy and reactive. They will not call you in 2026 to suggest a cost segregation study or an appeal. You must take the initiative. This is not a criticism of the profession; it is a reality of the workload. You need to be the driver of your own tax planning.

A Realistic Timeline for Action

Here is a practical schedule to follow.

In 2025, focus on data collection. Gather all purchase documents, closing statements, and capital improvement records. Run a cost segregation study on any property acquired in the last three years. Review your property record cards for errors. Set up a system to track comparable sales in your area.

In early 2026, file any appeals for the current tax year. This is also the time to make major capital improvements if you want to claim the 20% bonus depreciation. Do not wait until the end of the year. Contractors will be booked, and materials will be in short supply. The tax benefit of a completed project in December 2026 is significant, but only if the project is actually placed in service by December 31.

In late 2026, run your multi-scenario tax projection. Decide whether to accelerate income into 2026 or defer it to 2027. This is a delicate balance. If you expect your tax rate to increase in 2027, you want to recognize income in 2026. If you expect the SALT cap to expire and your deductions to increase, you may want to defer income to 2027. The optimal strategy depends on your specific situation, but you cannot make this decision without a detailed projection.

In 2027, be prepared for a higher tax bill. Do not assume that your mortgage escrow account will cover the increase. Many lenders do not adjust escrow payments until after the tax bill is issued, which can result in a large shortage. You should contact your lender in late 2026 to discuss the expected increase and adjust your monthly payment accordingly.

The Bottom Line

The property tax changes in 2027 are not a single event. They are a convergence of federal tax policy expirations, local assessment cycles, and market conditions. The owners who will thrive are not the ones with the most properties or the largest portfolios. They are the ones who understand the mechanics of the tax code and the assessment process, and who take action early. The window for strategic planning is closing. Every month you wait reduces your options. Start your analysis today, not because 2027 is imminent, but because the decisions you make now will determine your tax bill in that year.