Multi-State Tax Obligations: When Your Business Owes Tax in More Than One State

By Yarik Yarosh, CPA ·September 5, 2026 ·Updated September 23, 2026 ·9 min read

Written by Yarik Yarosh, CPA (US & Canada) September 5, 2026 · FL CPA license AC61704 · CPA Ontario

A business operating in multiple states faces two separate nexus questions: (1) does the business have income tax nexus (obligation to file a state income tax return and pay state income tax) and (2) does the business have sales tax nexus (obligation to collect and remit sales tax on taxable transactions). These are independent determinations with different thresholds. Physical presence (an employee, office, warehouse, or inventory) in a state almost always creates both income tax and sales tax nexus. Economic nexus (sales volume into a state without physical presence) creates sales tax nexus under the Wayfair standard but may or may not create income tax nexus depending on the state. P.L. 86-272 provides a federal safe harbor that prevents a state from imposing income tax on an out-of-state business whose only in-state activity is solicitation of orders for tangible personal property, but this protection does not apply to sales tax or to businesses selling services or digital products.

✓Key takeaway

Multi-state nexus overview:

Nexus Type	What Creates It	What It Triggers
Physical presence (income tax)	Employee, office, property, inventory in the state	State income tax return + apportioned income tax
Physical presence (sales tax)	Same	Sales tax collection + remittance on taxable sales
Economic nexus (sales tax)	Each state’s own sales threshold ($100K in FL and PA; $500K in CA and TX)	Sales tax collection + remittance
Economic nexus (income tax)	Varies by state (some states use factor presence test: $50K-$500K in sales)	State income tax return + apportioned income tax
P.L. 86-272 protection	Only soliciting orders for tangible goods (no service delivery, no digital products)	Protected from income tax even with physical presence

States with no income tax (no state income tax filing needed regardless of nexus):

Alaska (but has local sales taxes)
Florida
Nevada
New Hampshire (no sales tax, but has BPT/BET on businesses)
South Dakota
Tennessee (no wage income tax, but has franchise/excise tax)
Texas (no income tax, but has franchise tax/margin tax)
Washington (no income tax, but has B&O tax)
Wyoming

States with no sales tax:

Alaska (no state sales tax, but local jurisdictions may impose)
Delaware
Montana
New Hampshire
Oregon

Income apportionment (how states divide income):

Method	Formula	States Using It
Single-factor (sales only)	100% sales	Most states (majority, trend toward this)
Three-factor equal weight	33.3% sales + 33.3% payroll + 33.3% property	Declining, few states
Double-weighted sales	50% sales + 25% payroll + 25% property	Some states
Market-based sourcing	Sales sourced where the customer receives the benefit	Majority of states for services
Cost-of-performance	Sales sourced where the service is performed	Declining, some states

How does multi-state taxation work?

Hypothetical example

Round numbers. An IT consulting firm. S-Corp. Based in Florida (no state income tax). 3 employees. Serves clients in Florida, Georgia, and New York.

Revenue by state:

State	Revenue	Employees There	Physical Office
Florida (home state)	$400,000	3 (including owner)	Yes
Georgia (client travel)	$150,000	0	No
New York (remote client)	$100,000	0	No
Total	$650,000

Nexus analysis:

Florida:

Income tax nexus: N/A (Florida has no state income tax)
Sales tax: IT consulting services are generally not subject to Florida sales tax (services are largely exempt in Florida, though some technology services may be taxable)
Filing required: No state income tax return

Georgia:

Physical presence: The owner travels to Georgia clients 2-3 days/month. Does this create nexus?
- Under P.L. 86-272: No protection (the firm sells services, not tangible goods)
- Georgia’s position: Regular travel to Georgia to perform services creates income tax nexus
- Result: Georgia income tax filing likely required
Economic nexus (sales tax): Georgia sets its own remote seller threshold. The firm has $150K in Georgia revenue. But IT consulting services are generally not subject to Georgia sales tax.
Filing required: Georgia corporate income tax return (Form 600-S for S-Corp, pass-through to shareholder)

New York:

Physical presence: No employees, no travel to New York. All work performed remotely from Florida.
Economic nexus (income tax): New York uses a “factor presence” test. $1M or more in New York receipts can create nexus. $100K is below the threshold.
Result: No New York income tax filing required (no physical presence, below economic nexus threshold)
But: if the firm had even one employee working remotely from New York, or if the owner traveled to New York regularly, nexus would be triggered

Georgia apportionment calculation: Georgia uses single-factor apportionment (sales only, market-based sourcing).

Factor	Georgia	Total	Ratio
Sales	$150,000	$650,000	23.1%

S-Corp net income: $200,000 Georgia apportioned income: $200,000 x 23.1% = $46,154 Georgia tax rate: 5.49% (flat rate) Georgia tax: $46,154 x 5.49% = $2,534

Since Florida has no income tax, there’s no credit for taxes paid to Georgia. The $2,534 is pure additional cost.

What if the firm had New York nexus? Hypothetically, if nexus existed:

New York apportioned income: $200,000 x ($100,000/$650,000) = $30,769 New York tax rate: 6.5% (small business rate) New York tax: $30,769 x 6.5% = $2,000

The “convenience of the employer” trap (New York): New York has a “convenience of the employer” rule: if an employee works remotely from another state for the employee’s convenience (not the employer’s business necessity), New York treats that work as performed in New York. A New York-based company with a Florida remote worker could owe New York tax on that worker’s income. This is one of the most aggressive state tax positions in the country.

Multi-state compliance costs:

Item	Annual Cost
Georgia S-Corp return (CPA prepared)	$500-$800
Georgia estimated tax payments (quarterly)	Time cost
Tracking revenue by state	Time cost
Sales tax compliance (if applicable)	$500-$1,000/year per state
Multi-state payroll tax (if employees in other states)	$300-$500/year per state
Total additional compliance cost	$1,300-$2,300/state

Planning strategies:

Structure work as remote when possible. If all Georgia client work can be performed from Florida (remote IT support, cloud-based consulting), consider whether physical travel is creating nexus unnecessarily.
Track revenue by client state. Even before nexus is triggered, tracking revenue by state makes it easy to determine when thresholds are crossed.
Use the de minimis exception. Some states have a de minimis exception for businesses with minimal in-state activity (e.g., less than $50,000 in sales or fewer than 10 days of physical presence).
Consider the total tax impact. For a Florida-based business, every state with income tax is additional cost (no credit available against a zero Florida tax). For a business based in a high-tax state (New York, California), multi-state apportionment can actually REDUCE total state tax by shifting income to lower-tax states.
VDA (Voluntary Disclosure Agreement). If the business has been operating in a state without filing, a VDA allows the business to come into compliance with reduced penalties and a limited look-back period (typically 3-4 years instead of unlimited).

Illustrative numbers only, not a real client and not advice for your facts.

How do I know if I need to collect sales tax?

Sales tax obligations depend on nexus, a connection between your business and a state that triggers a collection requirement. Physical nexus comes from having a location, employee, or inventory in a state. Economic nexus, established after the 2018 Supreme Court decision in South Dakota v. Wayfair, triggers when you exceed a state’s revenue or transaction threshold (each state sets its own figure and period; Florida and Pennsylvania use $100,000 of sales, for example, while California and Texas use $500,000). Each state sets its own rules, rates, and exemptions. If you sell online and ship to multiple states, you likely have economic nexus in several states and must register, collect, and remit sales tax in each.

What is the difference between sales tax and use tax?

Sales tax is collected by the seller at the point of sale and remitted to the state. Use tax is owed by the buyer when sales tax was not collected, typically on out-of-state purchases or items withdrawn from inventory for personal use. As a business, you owe use tax on equipment, supplies, or inventory purchased from vendors who did not charge sales tax. Many states combine sales and use tax on a single return. Failing to self-assess use tax can result in back-tax assessments for the full statute of limitations period, typically three to four years, plus interest and penalties.

Related guides:

Does a consulting firm owe sales tax where its clients are?

Only if it has sales tax nexus in that state and its service is taxable there, and those are two separate checks. Nexus comes first. Some state thresholds only count goods: California’s $500,000 test and New York’s $500,000 test both refer to sales of tangible personal property.

Others count services. Texas measures total Texas revenue from goods and services over the preceding twelve calendar months against a $500,000 safe harbor. Ohio’s statute presumes nexus at more than $100,000 of receipts from goods or services delivered to or benefiting Ohio, or 200 or more transactions, in the current or preceding calendar year. Physical presence counts on its own too, and Texas lists an employee or representative in the state to sell or take orders.

Keep all of this apart from the income tax analysis above. P.L. 86-272 only limits income tax, and only for sellers of tangible goods, so an IT consulting firm gets no help from it.

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Cite this page

Yarik Yarosh, CPA. "Multi-State Tax Obligations: When Your Business Owes Tax in More Than One State." Blue Cloud CPA, September 5, 2026, updated September 23, 2026. https://bluecloudcpa.com/guides/small-business-multi-state-tax-obligations-nexus

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.