State and local tax issues catch middle market and closely held businesses off guard more often than most owners expect. While federal tax planning typically gets the lion’s share of attention, it is the patchwork of state and local rules, each with its own quirks, deadlines, and compliance traps, that creates the real exposure for growing companies operating across jurisdictions. The central question this article answers is straightforward: how do state and local tax rules affect a closely held business, and what can owners do to manage that exposure?
At the 2017 Cleveland Accounting Show, Pease & Associates Director of Tax Charles Federanich joined a panel to address exactly this problem. The session, titled “State & Local Tax Issues: Quirks that Affect Middle Markets and Closely Held Businesses,” explored the practical challenges business owners face when their operations, customers, or employees cross state lines. The insights shared during that discussion remain directly relevant today, as state tax complexity has only increased.
Why State and Local Tax Planning Deserves More Attention
Many business owners treat state taxes as a filing afterthought, something handled automatically once the federal return is done. That assumption is risky. Each state sets its own rules for income apportionment, sales tax collection, franchise taxes, and pass-through entity treatment. A company with operations in just two or three states can face wildly different obligations depending on how each state defines taxable activity.
For middle market businesses, generally defined as companies with annual revenues between $10 million and $1 billion, the stakes are significant. These companies are large enough to trigger filing obligations in multiple states, yet often lack the dedicated in-house tax departments that the largest corporations maintain. The result is a gap between exposure and preparedness that state auditors are increasingly eager to exploit.
Closely held businesses face an additional layer of complexity. Because ownership is concentrated among a small group of individuals, the interplay between personal and business-level state taxes can create planning opportunities, or costly surprises, that do not arise in widely held corporations. Owners who treat the business return and their personal return as a single integrated picture tend to fare far better than those who view them separately.
What Tax Nexus Means for Multi-State Businesses
Tax nexus is the threshold that determines whether a state has the legal right to tax a business. Historically, nexus required a physical presence, such as an office, warehouse, or employee based in the state. The landmark 2018 Supreme Court decision in _South Dakota v. Wayfair_ changed that standard for sales tax, allowing states to assert nexus based purely on economic activity such as revenue or transaction volume. The full opinion is available through the Supreme Court’s published decisions.
For middle market companies, this shift has been transformative. A business that sells products or services into 20 states may now have sales tax collection obligations in most or all of them, even without a single employee or facility outside its home state. Income tax nexus rules vary by state and have not uniformly adopted the economic nexus standard, adding another layer of complexity.
The practical consequence is clear. Businesses must regularly evaluate where they have nexus, what types of tax that nexus triggers, and whether they are currently in compliance. Failing to do so does not just risk penalties. It can result in years of back taxes plus interest when a state decides to audit.
Common SALT Quirks That Trip Up Growing Companies
State and local tax rules are full of provisions that do not follow federal conventions. These quirks create real compliance risk for companies that assume state rules mirror the Internal Revenue Code.
Apportionment formula differences. States use different methods to divide a multi-state company’s income for tax purposes. Some use a single sales factor, others use a three-factor formula weighing sales, payroll, and property. A company profitable in one state may show a loss in another purely because of how the math works, or the reverse.
Pass-through entity tax elections. Following the 2017 Tax Cuts and Jobs Act’s $10,000 cap on state and local tax deductions for individuals, many states created optional pass-through entity (PTE) taxes. These allow S corporations and partnerships to pay state income tax at the entity level, generating a federal deduction that bypasses the individual cap. The IRS confirmed this treatment in Notice 2020-75, but the rules for electing into each program differ significantly from state to state, and timing requirements are strict. The 2025 One Big Beautiful Bill Act temporarily raised the individual SALT cap to $40,000 for tax years 2025 through 2029, subject to an income-based phasedown, before it is scheduled to return to $10,000 in 2030, so the value of PTE elections continues to depend on each owner’s specific situation.
Throwback and throwout rules. Some states require companies to “throw back” sales revenue to the home state if the destination state cannot tax the sale. This effectively increases the tax base in the home state and can catch businesses unaware when they expand into states with no income tax.
Varying treatment of IRC Section 199A and bonus depreciation. Not all states conform to federal provisions around the qualified business income deduction or bonus depreciation schedules. A deduction that reduces federal taxable income by hundreds of thousands of dollars may be partially or fully disallowed at the state level.
How Closely Held Businesses Can Reduce Multi-State Tax Exposure
Closely held businesses have distinct planning levers available because of their ownership structure. Entity selection, compensation strategies, and distribution timing all interact with state tax rules in ways that can be optimized, or that can create unintended liabilities if ignored.
One of the most effective strategies is proactive entity structuring. Depending on the states involved, it may be advantageous to operate through separate entities for different business lines or geographies. This approach can isolate income in lower-tax jurisdictions and limit nexus exposure in higher-tax states. However, it must be supported by genuine business purpose and economic substance to withstand audit scrutiny.
Voluntary disclosure agreements (VDAs) offer another important tool. If a business discovers it should have been filing in a state where it has unreported nexus, most states offer VDA programs that allow the company to come into compliance with reduced penalties and a limited look-back period. The window for VDAs closes once the state contacts the business, so once an audit notice arrives, the opportunity is typically gone.
Credit planning is also essential. Owners of closely held businesses who pay taxes in multiple states should ensure they are claiming all available credits for taxes paid to other jurisdictions. Without careful tracking, double taxation of the same income is a real and common outcome. Coordinated tax advisory services help owners model these credits before returns are filed rather than discovering shortfalls after the fact.
Why Middle Market Companies Need a SALT Specialist
State and local tax advisory is not a commodity service. The rules change frequently, vary dramatically across jurisdictions, and interact with federal provisions in ways that require specialized knowledge. A generalist tax preparer may handle federal compliance well but miss state-specific elections, credits, or filing obligations that materially affect the bottom line.
The panel discussion at the Cleveland Accounting Show highlighted this point directly. Charles Federanich emphasized that middle market businesses benefit most from advisors who track legislative changes across all relevant states, understand how apportionment and nexus rules apply to the specific industry, and can model the tax impact of business decisions, such as hiring a remote employee in a new state, before the decision is made. Organizations like the Multistate Tax Commission publish model rules and uniformity guidance that specialists use to anticipate how states may move.
For closely held businesses, the relationship between the owner’s personal tax situation and the company’s state obligations makes this expertise even more critical. A SALT specialist can identify planning opportunities that save the business and its owners significant money, while a generalist may not even recognize the questions to ask. This holds across sectors, from manufacturing operations selling into many states to distribution businesses managing inventory and shipping across jurisdictions.
The Value of Industry Events for Staying Current on Tax Policy
Accounting conferences like the Cleveland Accounting Show play an important role in keeping tax professionals and business leaders informed about evolving state and local tax issues. These events bring together practitioners, regulators, and advisors to discuss real-world challenges and emerging trends.
The 2017 panel featuring Charles Federanich was particularly timely. It took place just months before the Tax Cuts and Jobs Act fundamentally changed the SALT deduction landscape for individuals, triggering the wave of pass-through entity tax elections that now affect many businesses. Professionals who attended that session were better positioned to advise their clients through the disruption that followed.
For business owners, attending or following coverage of these events provides early insight into legislative trends, enforcement priorities, and planning strategies that may not appear in mainstream business media for months or years after the fact.
Taking the Next Step on State and Local Tax Compliance
If your middle market or closely held business operates across state lines, or sells to customers in multiple states, a proactive review of your state and local tax position is one of the highest-return investments you can make. The complexity is real, but so are the planning opportunities.
Pease & Associates (now Pease Bell) offers tax advisory services that include state and local tax planning for middle market and closely held businesses. Their team brings the kind of specialized SALT knowledge that these situations demand.
Contact Pease Bell to discuss your state and local tax position, or learn more about their tax advisory services.
Frequently Asked Questions
What are the most common state and local tax issues for middle market businesses?
The most frequent issues include unrecognized nexus in states where the company has economic activity, incorrect income apportionment across jurisdictions, missed pass-through entity tax elections, and failure to claim credits for taxes paid to other states. Each of these can result in overpaid taxes or audit exposure that compounds over multiple years.
How does tax nexus work for businesses selling into multiple states?
Tax nexus is the legal connection that gives a state the authority to tax a business. Since the 2018 _Wayfair_ decision, states can assert sales tax nexus based on economic thresholds, typically a combination of revenue and transaction counts, without requiring physical presence. Income tax nexus rules vary by state and may still require different triggers.
What is a pass-through entity tax election, and should my business use one?
A pass-through entity tax election allows S corporations and partnerships to pay state income tax at the entity level rather than passing it through to individual owners. This creates a federal income tax deduction at the entity level, which is not subject to the individual SALT deduction cap. The 2017 Tax Cuts and Jobs Act set that cap at $10,000, and the 2025 One Big Beautiful Bill Act raised it to $40,000 through 2029 before it reverts to $10,000 in 2030, with a phasedown for higher-income taxpayers. Whether to elect depends on your state’s specific rules, the timing requirements, and your owners’ individual tax situations.
How can closely held businesses reduce their state tax burden?
Closely held businesses can reduce state tax exposure through entity restructuring, pass-through entity tax elections, voluntary disclosure agreements for past non-compliance, and careful credit planning for taxes paid across multiple jurisdictions. Each strategy requires analysis specific to the states involved and the business’s ownership structure.
Why do state tax rules differ so much from federal tax rules?
Each state has its own legislature, tax code, and revenue needs. States are not required to conform to the Internal Revenue Code, and many choose to decouple from specific federal provisions, especially those that reduce state revenue, like bonus depreciation or the qualified business income deduction. This creates a compliance landscape where every state must be evaluated independently.
When should a business consider hiring a SALT specialist?
Any business with operations, employees, or significant sales in more than one state should consult a SALT specialist. The need becomes urgent during business expansions, mergers, changes in remote work policies, or when a state contacts you about an audit. Proactive SALT planning typically costs far less than resolving compliance issues after the fact.
