One remote hire or a move of your own can trigger a state tax filing you didn’t see coming. We’ll map which states expect a return and prepare each one. Along the way, we look for savings, such as pass-through entity tax elections.
Choose the situation closest to yours. Each card starts with the problem it solves, then explains what we do about it.
Know which states expect a return
Before you file anywhere, you need to know where you owe. That starts with nexus, the level of business activity in a state that requires you to file and pay tax there. Employees, property or sales in a state can each create it. Missing it can mean back taxes, penalties and interest, often stretching over several years. Our nexus review maps your activity against each state’s thresholds, so you can catch new obligations early and get a clear list of required filings.
Pay each state only its share
A state taxes only its share of a multi-state business’s income. That share comes from a formula built mostly on where you make sales; some states also count payroll and property. Accountants call this apportionment. Get it wrong and you either overpay or under-report, so we apply each state’s formula line by line.
Lower your federal tax with a state election
About three dozen states let partnerships and S corporations pay state income tax at the entity level, through a pass-through entity tax (PTET) election. Federal rules generally let the business deduct that payment. It matters most for higher earners, whose personal deduction for state taxes can shrink back to $10,000. We model each state before you elect.
Spare your owners a return in every state
When partners or shareholders live elsewhere, many states let the business file one composite return on their behalf. That can save each owner a separate nonresident filing. However, composite rates aren’t always the cheapest option, so we compare both routes first.
File the move year correctly
The year you move typically brings a part-year return in each state, split by the date your residency changed. We sort every source of income into the right state, then claim credits so the same income isn’t taxed twice where the rules allow.
Build a record your old state will accept
High-tax states often audit people who leave. We’ll help you document the move with the evidence auditors look for, such as where you spend your days and where your family lives. It’s far easier to build that file now than to rebuild it during an audit.
Move your business without a gap
If your company moves with you, its withholding and state returns move too. We plan the transition-year returns to keep each filing in the right state and to close out your old state’s final filings without loose ends.
Keep property in the state you left
Holding a rental in your former state generally means a nonresident return there every year. We prepare it alongside your home-state filing and apply the credit for taxes paid, so the rental income isn’t fully taxed twice.When partners or shareholders live elsewhere, many states let the business file one composite return on their behalf. That can save each owner a separate nonresident filing. However, composite rates aren’t always the cheapest option, so we compare both routes first.
See the tax cost before you hire
One remote hire in a new state can bring payroll withholding duties and, in some cases, an income tax filing for the business. We walk through the impact before the offer letter goes out. That way, the tax cost becomes part of the hiring decision.
Handle the convenience rule
New York and a few other states can tax remote employees as if they worked at your office, unless the arrangement exists for the employer’s benefit. We document each setup, so withholding follows the rule that applies to each person.
Use reciprocity where it applies
Some neighboring states have agreements that let employees pay income tax only to their home state. When one applies to your team, we use it to simplify withholding for you and for your employees.
Stay ahead of every deadline
Every state sets its own due dates and estimated payment schedule. We keep one calendar across all of them, which keeps smaller states’ deadlines in view while you focus on the larger ones.
Avoid paying twice on one paycheck
Most states give residents a credit for tax paid to another state on the same dollars. It’s often capped, though. That’s why we prepare your nonresident returns first, then work out the home-state credit from real figures.
File where your income comes from
Your paycheck may be taxed where you work, while profits passed through to you on a K-1 often follow the company that earned them. We sort out which state gets which dollars, then file every return you need.
Plan around different state rules
Many states break from federal rules on items like retirement income or capital gains. We flag where yours departs from them, so a state bill doesn’t surprise you after your federal return looked fine.
Pay estimates to the right states
Estimated payments have to be split by state, based on where your income will land. We set the amount and timing for each state, which helps you avoid underpayment penalties without overpaying anywhere.
Most multi-state problems start small, such as one employee working from home in another state or online sales that crept past a threshold. The cost shows up later, often with interest attached.
Many states can tax your business once your sales there pass a set threshold, even with no office in the state. Miss that line, and back taxes plus penalties can build for every year you didn’t file.
When two states claim the same dollars, you can pay twice unless the income split and credits are set up right. It’s one of the most common errors we find on returns prepared without a multi-state review.
A pass-through entity tax election can lower your federal tax bill, but each state sets its own deadline for making it. Once that date passes, the savings for that year are usually gone.
Moving doesn’t end your tax ties automatically. States such as New York and California review departing residents closely, so thin records can leave you owing your former state for income earned after you left.
Discuss your setup, challenges, and opportunities, then pick a time that works.
Schedule a free 30-minute discovery call with our team
Serving clients nationwide: Atlanta, Utah, Puerto Rico, and beyond.
Each guide explains how that state would tax you and your business. It also covers what tends to trip up newcomers. Because rates and rules change often, treat these as background for your Discovery Call rather than a final answer.
Flat individual income tax since 2023, with a separate corporate rate for C corporations.
One of the highest top individual rates in the country. The state looks closely at residents who move away.
A single flat income tax rate applies to both individuals and corporations.
No personal income tax. The corporate income tax generally reaches C corporations, not S corporations. Home to our Tampa office.
A flat individual rate that lawmakers keep stepping down. Corporations split income using sales alone. Home to our Atlanta office.
A flat individual rate, plus a separate income-based replacement tax that also reaches S corporations and partnerships.
Moved to flat rates in 2025: 3% for individuals and 5.5% for corporations. Its franchise tax ends starting in 2026.
A 5% income tax, plus a 4% surtax on earnings above roughly $1 million.
A flat state income tax, but Detroit and a number of other cities levy their own as well.
No general sales tax, which matters for retail and online sellers. Individual income tax uses two brackets.
New York City adds its own tax for residents. The state’s convenience rule can also tax remote workers at your office location.
A flat individual rate. The corporate income tax is scheduled to reach zero in 2030, though the franchise tax remains.
A low flat state rate, but local earned income taxes also apply. Corporate tax steps down each year through 2031.
No tax on wages. Franchise and excise taxes apply to most entities, including limited liability companies.
No personal or corporate income tax. Most entities file franchise tax reports, with no tax due below an annual revenue threshold.
One flat rate for individuals and corporations, trimmed by the legislature in recent years. Home to our Park City office.
No tax on wages. Businesses pay a business and occupation tax on total sales, before expenses. The state also taxes some large long-term capital gains.
We work across 40+ states, and we add new guides regularly.
No personal income tax. The corporate income tax generally reaches C corporations, not S corporations. Home to our Tampa office.
No tax on wages. Franchise and excise taxes apply to most entities, including limited liability companies.
No personal or corporate income tax. Most entities file franchise tax reports, with no tax due below an annual revenue threshold.
No tax on wages. Businesses pay a business and occupation tax on total sales, before expenses. The state also taxes some large long-term capital gains.
We work across 40+ states, and we add new guides regularly.
Flat individual income tax since 2023, with a separate corporate rate for C corporations.
A single flat income tax rate applies to both individuals and corporations.
A flat individual rate that lawmakers keep stepping down. Corporations split income using sales alone. Home to our Atlanta office.
A flat individual rate, plus a separate income-based replacement tax that also reaches S corporations and partnerships.
Moved to flat rates in 2025: 3% for individuals and 5.5% for corporations. Its franchise tax ends starting in 2026.
A flat state income tax, but Detroit and a number of other cities levy their own as well.
A flat individual rate. The corporate income tax is scheduled to reach zero in 2030, though the franchise tax remains.
A low flat state rate, but local earned income taxes also apply. Corporate tax steps down each year through 2031.
One flat rate for individuals and corporations, trimmed by the legislature in recent years. Home to our Park City office.
We work across 40+ states, and we add new guides regularly.
One of the highest top individual rates in the country. The state looks closely at residents who move away.
A 5% income tax, plus a 4% surtax on earnings above roughly $1 million.
No general sales tax, which matters for retail and online sellers. Individual income tax uses two brackets.
New York City adds its own tax for residents. The state’s convenience rule can also tax remote workers at your office location.
We work across 40+ states, and we add new guides regularly.
Connected Services
Every state return draws on your books and your federal filings. As your footprint grows, these services keep the figures feeding each state consistent, so the returns agree with one another.
Owner salary and pass-through entity tax elections, planned together across every state you file in.
Partner allocations and composite returns that line up with each partner's home-state filing.
Monthly reporting that tracks payroll, sales and property by state, so each income split starts from accurate data.
Transactions coded by location from day one, which is the base layer every state return relies on.
Most multi-state problems cost less to prevent than to fix. Here’s how our CPAs think about it, drawn from the situations we see most often.
The costly multi-state problems usually aren’t complicated. Someone hires a remote employee or moves to a new state and assumes the paperwork will follow. A short conversation before the change almost always costs less than the cleanup afterward.
Trevor McCandless, CPA, MTax
CEO, Fusion CPA
A software company hired its first employee in a second state and kept payroll running as before. Nobody set up withholding there. The hire had also given the business a state income tax obligation. Because it surfaced in year one, the fix took a single catch-up filing instead of several years of back returns.
An S corporation owner moved in July from a high-tax state to one with no tax on wages. We split the year’s income by move date and started a day-count record in the first week. When the former state later asked questions, the owner had a documented answer ready. No scramble.
Scenarios are illustrative composites based on situations we see often. They are not individual client stories, and no identifying information was used to create them.
We start by learning where your business and owners are, and what's about to change. You'll leave with a clearer view of which states may expect returns and what deserves a closer look. If we're a good fit, we'll suggest next steps.
Once you're a client, we review prior state filings for gaps and overpayments. Where a return is missing, we explain your options, including the voluntary disclosure programs many states offer, which can reduce penalties.
With past years settled, we plan ahead. That covers where to file, whether PTET elections pay off and how upcoming hires or moves change the picture. You also get a state-by-state calendar of returns and estimated payments.
As you add states or entities, we update the plan before each change takes effect. Each year, we prepare your state business and personal returns together, so the numbers match across every filing.
Meet the Fusion CPA Team – experienced CPAs and UHNW Institute advisors, led on the tax side by Katherine Harrington, CPA, MAFM – Tax Director
Every industry crosses state lines differently. A staffing firm’s exposure travels with its workers; for an eCommerce brand, it’s the customers that matter, wherever they order from. So we start with how your business runs.
Distributed teams can bring withholding duties and income tax returns in states where you have no office.
Sales into other states can cross filing thresholds long before anyone on the team notices.
Practices across state lines need clean income splits and owner returns that agree with them.
Several entities and family members in different states need one coordinated plan.
Each state where you own property typically expects a return, even if you live elsewhere.
The freelancers you hire and the clients you serve nationwide affect where your agency owes income tax.
Frequently Asked Questions
Usually once you create nexus there, meaning enough business activity in a state that you’re required to file and pay tax. Employees, property or enough sales can each create it, even with no office in the state. Missing it can lead to back taxes, penalties and interest. Because thresholds vary by state, a nexus review helps you catch new obligations early.
Often, yes. The federal limit on deducting state and local taxes rose to $40,000 for 2025, but it shrinks back to $10,000 for higher earners. A pass-through entity tax election lets an S corporation or partnership pay state income tax as a business expense instead, outside that limit. Since the benefit depends on your income and each state’s rules, we model it before you elect.
Usually a part-year return in each state, with income split by the date your residency changed. It also helps to keep records that show the move, such as a new driver’s license and a log of where you spend your days. If your old state questions it later, that file becomes your strongest support.
It depends mainly on how many states you file in and whether earlier years need cleanup. We scope this during your Discovery Call and share a quote before any work begins.
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Read MoreFusion CPA provides multi-state tax compliance for business owners and individuals across 40+ states. Services start with nexus analysis, which flags state filing obligations before back taxes and penalties build up. The team also prepares state business and personal returns, handles income apportionment and part-year returns for relocations, reviews pass-through entity tax elections, and plans for remote workforces. State filings are coordinated with your federal returns and can be paired with bookkeeping or controller services, so every state return draws on consistent numbers.
The firm is an AICPA member, QuickBooks ProAdvisor, and Oracle NetSuite Certified partner. Fusion CPA operates from offices in Atlanta, GA, San Juan, Puerto Rico, Park City, Utah, and Tampa, Florida, and holds a 4.8-star average rating from 106 Google reviews. Email info@fusiontaxes.com, visit fusiontaxes.com, or call 404-955-7338 to schedule a Discovery Call.
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This web page is provided for general informational and educational purposes only and does not constitute tax, legal, accounting, or financial advice. Tax laws change and apply differently depending on your specific circumstances. Nothing here creates a client relationship with Fusion CPA, and it should not be relied upon or acted on without consulting a qualified professional about your own situation. To discuss how these rules apply to you, contact Fusion CPA at info@fusiontaxes.com.
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