Do I need a separate Aurora sales tax license if I sell online?

If you make taxable sales into Aurora by any channel and meet nexus rules, you must register for a local sales tax account; consult the City of Aurora business tax pages for specifics.

How often must I file returns?

Filing frequency is set by the Finance Division based on gross taxable sales and may be monthly, quarterly, or annually; see the municipal code and city forms page for thresholds and schedules.

What records should I keep for an audit?

Keep detailed sales invoices, exemption certificates, point-of-sale reports, and copies of returns for the period required by the city; the Finance forms and guidance pages describe record requirements.

Aurora Retail Sales Tax Rules and Filing

Taxation and Finance Colorado 4 Minutes Read · published February 09, 2026

Aurora, Colorado retailers must register, collect, and remit municipal sales taxes according to city rules and deadlines. This guide explains who must register, how to collect local sales tax, filing frequencies, recordkeeping, and the enforcement paths used by the City of Aurora Finance Division. It summarizes forms, common violations, and practical steps to remain compliant under Aurora municipal law and points to official resources for registration, returns, and appeal procedures.

Who must collect Aurora sales tax

Any seller making taxable retail sales of tangible personal property or taxable services within Aurora must collect the city sales tax and hold a valid local license or account. Nexus is established by physical presence, taxable activity in the city, or other thresholds described by the City of Aurora Finance Department on its business taxes pages City of Aurora Sales & Use Tax^[1].

Registration, collection and filing basics

Register for a sales tax account or license with the City of Aurora Finance Division; see the online registration and business tax pages Sales tax forms & registration^[2].
Determine filing frequency (monthly, quarterly, or annual) based on gross receipts thresholds set by the city code; specific thresholds and frequencies are described in the municipal code and Finance guidance Aurora Municipal Code - Revenue^[3].
Collect the correct combined rate (city plus any special district rates) at point of sale and remit the collected tax with the return by the due date.
Keep detailed sales records, exemption certificates, and copies of returns for the period required by city policy and state law.

Penalties & Enforcement

The City of Aurora enforces sales tax compliance through the Finance Division and may assess penalties, interest, administrative notices, and refer matters for collection or court action. Exact penalty figures, interest rates, and daily/continuing fine amounts are located in the city code and Finance procedural pages; if a specific monetary figure is not shown on an official page it is noted below as not specified on the cited page.

Fine amounts: not specified on the cited page; consult the Aurora Municipal Code and Finance pages for current penalty and interest formulas Aurora Municipal Code - Revenue^[3].
Escalation: the code and Finance procedures describe steps for initial notices, late penalties, and continuing obligations; exact escalation amounts or percentage tiers are not specified on the cited Finance overview City of Aurora Sales & Use Tax^[1].
Non-monetary sanctions: administrative orders, suspension of license or ability to transact, liens or levies, seizure of proceeds, and referral to municipal or district court are possible enforcement actions under city authority.
Enforcer and complaints: the City of Aurora Finance Division enforces collections; taxpayers may contact Finance for audits, inquiries, and to report compliance issues via the city business taxes contact page City of Aurora Sales & Use Tax^[1].
Appeals and review: appeal routes typically include administrative review with Finance, informal conferences, and filing in municipal court where permitted; the code specifies appeal mechanisms and time limits or states them as not specified on the cited page if absent.
Defences and discretion: documented exemptions, valid resale certificates, reasonable cause for filing delays, or approved payment plans may be considered; check Finance guidance and the municipal code for available relief or variance procedures.

If you receive a notice, act promptly to request review or a payment arrangement.

Applications & Forms

The City publishes registration and return forms for sales and use tax on the official forms page. Common documents include the sales tax account registration (business tax license) and periodic sales and use tax return. Fees, payment methods, and electronic filing options are listed on the city forms page; if a specific form fee or deadline is not listed on the form page it is not specified on the cited page Sales tax forms & registration^[2].

Recordkeeping and audits

Maintain sales receipts, exemption certificates, invoices, and returns for the retention period required by city or state law.
During an audit, provide requested documentation promptly; failure to produce records may result in estimated assessments.

Good records reduce audit risk and speed resolution if issues arise.

Common violations

Failing to register for a sales tax account before making taxable sales.
Collecting the wrong tax rate or failing to remit collected tax.
Missing filings or late payments without an approved arrangement.

FAQ

Do I need a separate Aurora sales tax license if I sell online?: If you make taxable sales into Aurora by any channel and meet nexus rules, you must register for a local sales tax account; consult the City of Aurora business tax pages for specifics City of Aurora Sales & Use Tax^[1].
How often must I file returns?: Filing frequency is set by the Finance Division based on gross taxable sales and may be monthly, quarterly, or annually; see the municipal code and city forms page for thresholds and schedules Aurora Municipal Code - Revenue^[3].
What records should I keep for an audit?: Keep detailed sales invoices, exemption certificates, point-of-sale reports, and copies of returns for the period required by the city; the Finance forms and guidance pages describe record requirements Sales tax forms & registration^[2].

How-To

Identify whether your sales activity creates nexus in Aurora by reviewing the city tax rules.
Register for a sales tax account or business tax license using the City of Aurora registration form.
Collect the correct sales tax rate at the point of sale and document exempt sales with certificates.
File and pay returns by the due date according to your assigned filing frequency.
Retain records and respond promptly to any Finance inquiries or audit requests.

Key Takeaways

Register early and collect the correct combined tax rate.
Observe filing deadlines and keep complete records to avoid escalated penalties.
Contact the City of Aurora Finance Division for guidance or to request payment arrangements.