The Pass-Through Entity Tax: A Legal SALT Cap Workaround

If you own a profitable business through an S-Corporation or partnership in a high-tax state, you have probably watched a large chunk of your state income tax deduction disappear on your federal return. The pass-through entity tax, usually shortened to PTET, is the legal response that more than 30 states have built to fix that. It moves the state tax off your personal return, where a federal cap limits it, and onto the business return, where no such cap applies. This guide explains how the strategy works, who it helps, and what to check before you elect.

The short answer

The PTET is a state-level election that lets a pass-through business pay your state income tax at the entity level. Because the business pays the tax, it becomes a fully deductible business expense on the federal return, and it is not subject to the $10,000 individual cap on state and local tax deductions. The IRS blessed this approach in 2020, so it is not an aggressive position. It is a recognized planning tool, and for many owners in states that offer it, the election may produce a meaningful federal deduction that would otherwise be lost.

Why the SALT cap created the problem

The 2017 Tax Cuts and Jobs Act capped the federal deduction for state and local taxes at $10,000 per return. Before that law, taxpayers who itemized could generally deduct the full amount of state income and property taxes they paid. For a business owner in California, New York, or New Jersey, that change was expensive. Someone paying $60,000 in state income tax could suddenly deduct only $10,000 of it federally.

The cap applies to individuals, not to businesses. A C-Corporation deducts its state taxes in full as an ordinary expense. Pass-through owners, by contrast, pay state tax personally on income the business earns, so their state tax got swept into the capped individual bucket. That mismatch is exactly what the pass-through entity tax was designed to close. It lets the owner of a pass-through be treated, for this one purpose, more like a corporation that deducts its own state tax.

How the pass-through entity tax works

The mechanics are simpler than the acronyms suggest. In a state that offers the election, the business chooses to pay the owners’ share of state income tax directly, rather than passing that income to the owners to be taxed on their personal returns. Here is the sequence in practice.

1. The S-Corporation or partnership elects into the state PTET regime for the year, following that state’s deadline and procedure.
2. The entity calculates the state tax on its income and pays it at the business level, often through estimated payments during the year.
3. The entity deducts that state tax payment as a business expense, which reduces the federal income that flows through to the owners.
4. Each owner then claims a credit or an income exclusion on their state return for their share of the tax the business already paid, so the income is not taxed twice by the state.

The federal benefit comes from step three. The state tax becomes a deduction against business income before that income reaches your personal return, so it sidesteps the $10,000 individual cap entirely. In effect, the deduction you lost as an individual is restored at the entity level.

The IRS guidance that made it legitimate

This is not a gray-area maneuver. In November 2020, the IRS issued Notice 2020-75, which confirmed that state income taxes paid by a partnership or S-Corporation are deductible by the entity in computing its federal taxable income, and that the deduction is not subject to the individual SALT cap. You can read the guidance directly in IRS Notice 2020-75. That signal is why states moved quickly, and why the strategy sits on solid ground rather than on an untested reading of the law.

A worked example

Numbers make the value concrete. Consider an owner of an S-Corporation in a state with a flat 9% income tax. The business generates $500,000 of income that passes through to the owner. Without the PTET, the owner pays $45,000 in state tax personally and can deduct only $10,000 of it on the federal return. With the PTET election, the business pays the $45,000 and deducts the full amount before the income reaches the owner.

In this illustration, the election restores $35,000 of deduction the owner would otherwise forfeit, which may cut federal tax by roughly $12,000 at a 35% marginal rate. The exact figure depends on your rate, your state, and other items on the return, so treat it as directional rather than a promise. Even so, the pattern holds: the more state tax you pay, the more the election tends to recover.

What changed under the 2025 tax law

The One Big Beautiful Bill Act, signed in 2025, reshaped the SALT landscape in two ways that matter here. First, it raised the individual SALT cap from $10,000 to $40,000 starting in 2025, with modest annual increases scheduled through the end of the decade. Second, and this is the catch for high earners, the higher cap phases back down for taxpayers with income above roughly $500,000, moving toward the old $10,000 floor as income climbs.

The practical result is that the PTET workaround remains valuable, especially for the exact audience it was built for. A high-income owner whose personal SALT deduction is phased back toward $10,000 still benefits from moving state tax to the entity level, where the cap does not reach. Notably, the final 2025 law did not restrict the PTET workaround, even though earlier proposals floated limits on it. Because these figures and phase-outs are indexed and detailed, confirm the current numbers with the IRS or a licensed tax professional before you plan around them.

Which owners benefit most

The election is not equally useful to everyone. It tends to deliver the most value when several conditions line up. In practice, the strongest candidates share these traits:

• The business is a partnership or an S-Corporation, since the PTET applies to pass-through entities rather than sole proprietorships or single-member LLCs that file on Schedule C.
• The owner lives and operates in a state that has enacted a PTET regime, which now covers the large majority of states with an income tax.
• State income tax on the business income comfortably exceeds the individual SALT cap that applies to the owner.
• The owner has enough pass-through income for the recovered deduction to be worth the added filing steps.
• The owner’s personal SALT deduction is otherwise limited, including high earners subject to the 2025 phase-down.

For an owner clearing several hundred thousand dollars in a high-tax state, the annual federal saving can reach five figures. For a low-tax-state owner whose state tax already fits under the cap, the benefit may be small or absent.

What to watch before you elect

The strategy is sound, but the details vary by state and the rules reward care. Keep the following in mind so the deduction holds and the election does not create a surprise elsewhere.

First, deadlines and mechanics differ widely. Some states require the election early in the tax year, others allow it with the return, and many demand estimated payments on a fixed schedule. Miss a payment window and you can lose the benefit for the year. Second, the owner-level credit is not always dollar for dollar. A few states grant a credit worth slightly less than the tax paid, which shaves the net benefit. Third, if you earn income in more than one state, the interaction of PTET regimes and resident-state credits gets complicated, and a poorly coordinated election can leave some tax uncredited.

There are also cash-flow and structural points. The business must have the cash to pay the tax at the entity level, which changes the timing of distributions. Owners with very different ownership percentages or differing state residencies may not benefit equally, which can raise fairness questions among partners. None of these is a reason to skip the election. They are reasons to model it with someone who knows your state’s specific regime before you commit.

How the pass-through entity tax fits with your other decisions

The pass-through entity tax rarely stands alone. It layers on top of the entity and compensation choices you have already made. If you run an S-Corporation, the salary you pay yourself and the profit you take as distributions both feed the income base that the PTET applies to, which is why the election belongs in the same conversation as your LLC versus S-Corp decision. The election also interacts with the qualified business income deduction, since paying tax at the entity level changes the income figures that flow to your return. Our breakdown of the QBI deduction under Section 199A explains why those figures deserve attention. Stacking strategies this way, rather than treating each in isolation, is where proactive planning earns its keep.

Frequently asked questions

Does a single-member LLC qualify for the PTET?

Generally not in its default form. A single-member LLC is disregarded and reports on Schedule C, so there is no separate entity to make the election. Electing S-Corporation or partnership taxation can change that, which is one more reason the entity choice and the PTET are linked. Confirm your state’s specific eligibility rules, since they vary.

Is the PTET the same in every state?

No. The states that offer it set their own rates, deadlines, credit mechanics, and election procedures. Some make the election annually, some make it binding for multiple years, and the owner-level credit can differ. A strategy that works cleanly in one state may need adjustment in another, so the details should be checked state by state.

Will the PTET workaround disappear?

It survived the 2025 tax law intact, and the individual SALT cap it addresses is scheduled to tighten again for high earners later in the decade. As with any provision tied to federal and state law, the rules can change, so treat the election as a year-by-year decision and revisit it when laws shift.

Turn a capped deduction into a planned one

For pass-through owners in high-tax states, the PTET is one of the clearest wins available. It rests on IRS guidance, it targets a real and often large lost deduction, and it scales with the state tax you already pay. The work is in the execution: confirming your state offers it, meeting the election and payment deadlines, and coordinating the credit correctly across returns. Done well, it may return thousands of dollars a year that the SALT cap would otherwise keep.

If you want to see which strategies may apply to your situation, start with our free guide, Top 5 Tax Strategies for High-Income Earners. When you are ready for the complete framework of more than 100 strategies, explore the ETS Playbook. Because state rules differ and the numbers move with your facts, speak with a licensed tax professional before making the election.

The strategies described here are general educational information about the U.S. tax code. Individual results vary based on income, entity structure, state law, and other factors. This is not personalized tax, legal, or financial advice. Consult a licensed tax professional before implementing any strategy.