Sales Tax · Denver, CO

Sales tax compliance
without the headache.

Colorado sales tax is famously complicated — state-administered and home-rule cities, special districts, and destination sourcing that changes by delivery address. We track where you owe, register where needed, and file on time, every time — Colorado DOR and beyond.

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See the work

Every jurisdiction, filed on time.

State, home-rule cities, special districts — tracked, calculated, and filed from one place. You see every filing, every deadline, and every confirmation number as it happens.

Colorado has over 700 taxing jurisdictions — and dozens of home-rule cities that administer their own sales tax.

The state rate is only the start. Denver, Boulder, and other home-rule cities require separate registration and separate filing, special districts stack on top, and destination sourcing means the rate changes with every delivery address. Sell online and it gets worse: cross an economic nexus threshold in another state and you suddenly owe there too. Miss a registration and the penalties compound quietly until a notice shows up. We make sure that notice never comes.

Registered, collected, filed —
everywhere you owe.

Colorado (home) City & County of Denver Boulder Colorado Springs Aurora Lakewood Westminster Arvada Thornton RTD / SCFD districts SUTS remote filings + every state where you have nexus
What's included

Nexus to notice-handling.
All of it.

Nexus monitoring

We track your sales by state and city and flag the moment you approach an economic nexus threshold.

Registrations

Colorado DOR, home-rule city licenses, and out-of-state permits — we handle every application.

Colorado DOR filings

State and state-collected local returns, filed on schedule — monthly, quarterly, or annually.

Home-rule city returns

Denver, Boulder, and every self-collecting city where you owe — registered and filed separately, the way they require.

Rate calculation

Destination-sourced rates by delivery address, special districts included — synced with your invoicing or ecommerce platform.

Marketplace reconciliation

Shopify, Amazon, Etsy — we reconcile marketplace-facilitator collections so you never double-remit.

Notice handling

A letter from the DOR or a city? Forward it through the Denver Bookkeeping Portal — we respond for you.

Audit support

If a sales tax audit ever comes, your filings, workpapers, and confirmations are already organized.

FAQ

Common questions.

Why is Colorado sales tax such a big deal?
Because Colorado is one of the few states where major cities administer their own sales tax. A sale delivered into Denver isn't covered by your state filing — home-rule cities require their own registration and their own return. Add destination sourcing and stacked special districts, and rates genuinely change block by block. It's very easy to be accidentally non-compliant here.
I sell online across the country. Where do I owe?
Wherever you've crossed an economic nexus threshold — usually $100K in sales or 200 transactions into a state, though it varies. We monitor your sales by state, tell you the moment you're approaching a threshold, and handle registration and filing when you cross it.
I haven't been filing in some cities. Am I in trouble?
You're not alone — it's the most common situation we see. We'll assess the exposure, get you registered, and bring past periods current. In many cases voluntary disclosure keeps penalties far lower than waiting for a notice.
Does my bookkeeping need to be with you too?
It helps — clean books make sales tax dramatically easier — but it's not required. Plenty of clients start with sales tax compliance only and bring bookkeeping over later.

Ready to hand off your sales tax?

Book a 30-minute demo. We'll show you what your current setup is missing and how we close the gap.

Get Started Call 786-808-4246