Can I choose my own filing frequency, or does the state assign it?

States assign filing frequency, you don’t choose it. The assignment is based on your estimated sales tax liability in the state: higher liability means more frequent filing. You may be assigned monthly filing in one state and annual filing in another for the same calendar year, depending on how your sales distribute.

How states determine your frequency

The primary factor is your annual sales tax liability in the state: the dollar amount of tax collected, not gross revenue. General thresholds (these vary significantly by state):

• Monthly: Sellers with higher tax liability, often $1,200+ or $2,400+ per year in the state
• Quarterly: Mid-range liability, often $300–$1,200 per year
• Annual: Low-liability sellers, often under $300 per year

At registration, the state uses your estimated annual liability to set initial frequency. As actual filing data accumulates, the state may adjust your frequency up or down.

SST states: monthly, regardless of volume

Sellers registered in SST member states through the SST program file monthly for all SST states, regardless of how much (or how little) tax they collect there. This is a program requirement, not a liability assessment.

A seller collecting $50/month from an SST state still submits 12 returns per year for that state. This is the trade-off for SST’s other benefits, free filing, simplified registration, reduced audit liability. For sellers using AutoFile through a CSP, the monthly filings are automatic and require no manual effort.

Can you request a different frequency?

In limited circumstances:

More frequent than assigned: Some states allow voluntary monthly filing even when the state assigns quarterly. Sellers who prefer aligning filing with their monthly close process sometimes request this. It’s administrative preference, there’s no financial benefit.

Less frequent than assigned: Generally not an option if you’ve been assigned monthly or quarterly based on liability thresholds. If your liability has materially decreased, you can contact the state to have the assignment reviewed after demonstrating lower actual liability.

What happens if you file on the wrong frequency?

Filing quarterly when the state expects monthly means two missed monthly filings for every quarter you file: each missed period generates a late filing penalty and accrues interest. If you’re unsure what frequency you were assigned, check your registration confirmation, your state DOR account portal, or call the state directly.

Multi-state sellers: frequency varies by state

With nexus in 20 states, you might have:

• Monthly filing in 8 states (your largest markets)
• Quarterly filing in 7 states
• Annual filing in 5 states (very low volume)

AutoFile software manages this variation automatically, it knows each state’s assigned frequency and submits returns on the correct schedule. Manual tracking across different frequencies across many states is where multi-state sellers most often miss deadlines.