In most states, you file one sales tax return with the state, and the state passes the local share to cities and counties. Home-rule states break that pattern. Some cities, parishes or boroughs administer their own sales tax, set their own rules, and expect their own returns. For multistate sellers, home rule states sales tax compliance is where filing counts and audit risk multiply. This guide explains how home-rule systems work in Colorado, Alabama, Louisiana, Alaska and Arizona, and how to calculate and remit local tax correctly.
Key takeaways
- In home-rule jurisdictions, local governments may set their own tax base, licensing and filing requirements.
- Colorado’s SUTS portal lets you file state and participating self-collecting city returns in one place.
- Alabama offers ONE SPOT for local filing and a flat 8% Simplified Sellers Use Tax for eligible remote sellers.
- Louisiana and Alaska give remote sellers a central portal or commission for local taxes.
What “Home Rule” Means for Sales Tax
A home-rule jurisdiction has constitutional or statutory authority to govern its own affairs, including taxes. In sales tax, that can mean:
- Self-collection: the city or parish collects its own tax instead of the state.
- Its own tax base: local exemptions and definitions can differ from the state’s.
- Separate licensing: a local sales tax license in addition to the state permit.
- Separate audits: the locality can audit you on its own.
For background on how local layers stack, see local and special district sales tax.
Home-Rule Systems by State
| State | Who administers local tax | Simplification options |
|---|---|---|
| Colorado | The state for state-collected localities; home-rule cities that elect to self-collect run their own tax and set their own taxable items | SUTS lets you file one consolidated return for state-administered and participating self-collecting cities; participation is voluntary for cities |
| Alabama | State-administered and self-administered (non-state administered) localities | ONE SPOT through My Alabama Taxes for county and municipal returns; flat 8% SSUT for eligible remote sellers |
| Louisiana | Each parish’s local collector, separate from the state | Parish E-File; remote sellers file a single state and local return through the Remote Sellers Commission portal |
| Alaska | Boroughs and cities; there is no statewide sales tax | The Alaska Remote Seller Sales Tax Commission (ARSSTC) for participating jurisdictions |
| Arizona | Cities set their own transaction privilege tax rates and some tax base rules | The Arizona Department of Revenue collects state and city TPT centrally |
Colorado: State-Collected vs Self-Collected
Colorado home-rule cities that administer their own tax are called self-collecting. They can define their own taxable items and run their own audits. SUTS, the Department of Revenue’s optional platform, lets taxpayers file one consolidated return covering state-collected taxes and participating self-collecting cities. Under state rules, taxpayers with average monthly tax of $300 or more file monthly; those below may file quarterly.
Example: a $500 taxable sale delivered in Boulder, CO (9.195% combined)
Total tax: $500 × 9.195% = $45.98, reported to the state and to Boulder as a self-collecting city through SUTS where Boulder participates, or directly to the city
Check rates on the Boulder and Denver pages.
Alabama: ONE SPOT and SSUT
Alabama localities can be state-administered or self-administered. ONE SPOT gives sellers a single electronic point for filing county and municipal sales, use, rental and lodging taxes through My Alabama Taxes. Remote sellers with no physical presence can instead join the Simplified Sellers Use Tax program, collecting a flat 8% on all sales into Alabama, regardless of local rates.
Example: a $1,000 sale shipped to Montgomery, AL
Actual combined rate (10%): $1,000 × 10% = $100.00
Under SSUT for an eligible remote seller: $1,000 × 8% = $80.00
See the Montgomery and Birmingham rate pages.
Louisiana: Parish Collectors and the Remote Sellers Commission
Louisiana’s state sales tax and parish taxes are administered separately. Sellers with a physical presence typically file local returns with each parish collector, often through Parish E-File. Remote sellers use the Louisiana Sales and Use Tax Commission for Remote Sellers, which offers a free portal to file a single return for state and local tax. Remote sellers must register within 30 days of exceeding the threshold and begin collecting within 60 days. Our Louisiana page notes where local rate data is limited.
Alaska: Local-Only Sales Tax
Alaska has no statewide sales tax, but many municipalities levy one. Jurisdictions that adopted the ARSSTC uniform code use a single threshold of $100,000 in statewide gross sales in the current or prior calendar year. The 200-transaction test was removed on January 1, 2025. Remote sellers register once with the ARSSTC and collect for all participating jurisdictions.
Example: a $300 order shipped to Juneau, AK (5% local rate)
Local tax: $300 × 5% = $15.00
A Home-Rule Compliance Workflow
- Map customers to jurisdictions using rooftop-level address data, not ZIP codes alone. Check addresses with the Sales Tax Calculator.
- Identify which jurisdictions self-administer and whether they participate in central portals.
- Register locally where required, in addition to the state permit. See multi-state sales tax registration.
- Configure local taxability, because a home-rule city may tax items the state exempts.
- File through central portals where available, and directly elsewhere.
- Keep local audit files, since home-rule cities audit independently. Use the audit preparation checklist.
Conclusion
Home rule states sales tax compliance is manageable once you know which jurisdictions run their own tax and which central tools you can use: SUTS in Colorado, ONE SPOT and SSUT in Alabama, the Remote Sellers Commission in Louisiana, ARSSTC in Alaska, and central TPT filing in Arizona. Map addresses carefully, register locally where needed, and keep separate local records. Look up local rates on our state sales tax pages, verify totals with the Add/Remove Sales Tax Calculator, and start from the Tax Rate Center homepage.
Frequently Asked Questions
What are home-rule states for sales tax?
States where some local governments administer their own sales tax, such as Colorado, Alabama, Louisiana and Alaska. These localities can have their own rules, licenses and audits.
How do I file in Colorado home-rule cities?
Use SUTS, Colorado’s optional platform, to file one return for state-collected taxes and participating self-collecting cities, or file directly with cities that do not participate.
What is Alabama’s Simplified Sellers Use Tax?
It is a program for eligible remote sellers to collect a flat 8% on all sales into Alabama, regardless of the local rate, and file one return with the state.
How do remote sellers file Louisiana local sales tax?
Through the Louisiana Sales and Use Tax Commission for Remote Sellers, which offers a free portal to file a single return for state and local tax.
Do I need to collect sales tax in Alaska?
Alaska has no statewide sales tax, but remote sellers with more than $100,000 in statewide sales must register with the ARSSTC and collect local tax for participating jurisdictions.