Bookkeeping for Centennial businesses, built for a home-rule city.
Centennial runs its own sales tax and licensing, so your books answer to the city as well as the state. Kellcat keeps both sides reconciled every month, with a live dashboard that shows where you stand. Just down C-470 in Sterling Ranch.
Four things that change your books in Centennial.
Centennial became a home-rule city in 2008. That means it writes and collects its own sales tax instead of letting the state do it, and every business in town needs something on file with the city.
Two sales tax returns, not one
The combined rate in Centennial is 6.75%. The state, RTD, SCFD and Arapahoe County pieces go on your Colorado return. The city’s 2.5% goes on a separate return filed directly with Centennial.
Every business registers with the city
Any business operating in Centennial needs either a City of Centennial Sales Tax License or a Business Registration. If you sell taxable goods you need the sales tax license; if you don’t but have a location in the city, you register.
A rate change may be on the way
On November 3, 2026, Centennial voters decide whether to raise the city sales and use tax from 2.5% to 3.5% for roads, the first change since 2003. If it passes, every retailer in the city will need to update its rate when it takes effect.
Short-term rentals are licensed here
Unlike Highlands Ranch, Centennial licenses short-term rentals. Each property needs a city STR license ($150 a year plus a one-time $50 application fee), the license number must appear on every listing, and city sales tax is remitted to Centennial.
This is a summary for planning, not tax or legal advice. Rates, ballot outcomes and rules change, so confirm current requirements with the City of Centennial’s Tax & Licensing team and the Colorado Department of Revenue. Anything that needs a tax opinion goes to your CPA.
Centennial owners who want both the city and the numbers handled.
Professional and tech services
Consultants, IT and engineering firms, and agencies serving Centennial’s larger employers, who need clean books, project profit and a clear view of cash.
Retail and product businesses
Shops and makers collecting Centennial sales tax who want state and city returns that match their books, and a ready plan if the rate changes.
Licensed short-term rental owners
Hosts with licensed Centennial rentals who need per-property books, city sales tax tracked, and numbers they can trust at tax time.
Contractors and trades
Remodelers, HVAC, landscaping and other trades working across Centennial’s neighborhoods who need job costing and profit by project.
Three steps from messy to monthly.
Most Centennial clients start with a review of their file, then settle into a monthly rhythm. Meetings happen in Centennial, at the Sterling Ranch office along C-470, or on Google Meet.
A free look at your file
Give Kellcat read-only access to QuickBooks Online or Xero. You get a written read on your books, how sales tax is split between Colorado and Centennial, and a live dashboard of six core numbers.
A walkthrough, your way
Go through the findings face to face in Centennial or Sterling Ranch, or over Google Meet if that’s easier for your schedule.
A steady monthly close
Every month: bank and card accounts reconciled, Colorado and Centennial tax accounts tied out, and the dashboard refreshed. KPI reports and cash flow advisory are there when you’re ready for them.
What Kellcat does for Centennial businesses.
Three layers, each built on the one before: clean books, a clear picture of your numbers, and confident decisions about cash. Start with the layer you need, add the next when you’re ready, and each one is set up for a city that collects its own tax.
Clean Books
Monthly bookkeeping in QuickBooks, Xero, or your current platform, reconciled, reviewed for accuracy, and tax-ready for your CPA, with a core dashboard and a short monthly email summary.
Clear Picture
Custom dashboards that connect your accounting, sales, and operations data into one view, with a KPI report and short action plan every two weeks.
Confident Decisions
Your Cash Map (a rolling 13-week view of cash in and out, plus a simple plan for where your money goes), weekly KPI and cash reports, with up to two calls a month to decide next steps.
Books cleanup or catch-up
Behind by a few months or more? Your books are brought current first, as a separate step quoted up front after a free review of your file. Most cleanups start at $500.
Rental property books
Each property tracked on its own: payouts, platform fees, cleaning, repairs and loan activity, with lender-ready reports.
Budgeting & scenario planning
A yearly plan, budget vs. actual, and “what if” scenarios for bigger moves, built on your monthly numbers.
From Southglenn to Dove Valley.
Neighborhoods
Home-based businesses and real estate investors across Centennial’s neighborhoods get the same monthly close and dashboard, with in-person meetings when they help.
Business areas
Retailers at SouthGlenn, offices along Arapahoe Road, and companies in the Dove Valley business park near Centennial Airport, all a short drive from Kellcat’s Sterling Ranch office.
Answers for Centennial business owners.
What is the sales tax rate in Centennial?
The combined rate is 6.75%: 2.5% City of Centennial, 2.9% state, 1% RTD, 0.1% SCFD and 0.25% Arapahoe County. On November 3, 2026, voters decide whether to raise the city rate to 3.5%, so check the city’s sales tax page for the current rate.
Do I file Centennial sales tax with the state?
No. Centennial is a home-rule city that administers and collects its own sales tax. The city’s share is filed on a City of Centennial return, and the state, RTD, SCFD and Arapahoe County shares go on your Colorado Department of Revenue return.
Does every Centennial business need a license?
Every business operating in Centennial needs either a City of Centennial Sales Tax License or a Business Registration. Businesses that sell taxable goods need the sales tax license; others with a physical location in the city need a Business Registration.
Can I run a short-term rental in Centennial?
Yes, with a license. Each short-term rental needs a City of Centennial STR license, which costs $150 per property per year plus a one-time $50 application fee. The license number must be posted on every advertisement, and city sales tax is remitted to Centennial.
Is Kellcat located in Centennial?
Kellcat’s office is in Sterling Ranch in Littleton, southwest of Centennial along C-470. Centennial clients can meet at their own office, at Kellcat’s, or on Google Meet, and the monthly bookkeeping itself is done through secure online access.
Does Kellcat file my sales tax returns or do my taxes?
Kellcat keeps your books reconciled, tracks state and city sales tax, and gets the numbers ready for each return. Income tax returns are prepared and filed by your CPA, and anything that needs a tax opinion is passed to your CPA.
Centennial books, right with the city and the state.
A free conversation about your books, your sales tax setup and what to fix first.
Not in Centennial? See all service areas, bookkeeping in Highlands Ranch or Littleton and south Denver. Outside the Denver area? See online bookkeeping, anywhere in the U.S.
Bookkeeping for Centennial businesses, built for a home-rule city.
Centennial runs its own sales tax and licensing, so your books answer to the city as well as the state. Kellcat keeps both sides reconciled every month, with a live dashboard that shows where you stand. Just down C-470 in Sterling Ranch.
Four things that change your books in Centennial.
Centennial became a home-rule city in 2008. That means it writes and collects its own sales tax instead of letting the state do it, and every business in town needs something on file with the city.
Two sales tax returns, not one
The combined rate in Centennial is 6.75%. The state, RTD, SCFD and Arapahoe County pieces go on your Colorado return. The city’s 2.5% goes on a separate return filed directly with Centennial.
Every business registers with the city
Any business operating in Centennial needs either a City of Centennial Sales Tax License or a Business Registration. If you sell taxable goods you need the sales tax license; if you don’t but have a location in the city, you register.
A rate change may be on the way
On November 3, 2026, Centennial voters decide whether to raise the city sales and use tax from 2.5% to 3.5% for roads, the first change since 2003. If it passes, every retailer in the city will need to update its rate when it takes effect.
Short-term rentals are licensed here
Unlike Highlands Ranch, Centennial licenses short-term rentals. Each property needs a city STR license ($150 a year plus a one-time $50 application fee), the license number must appear on every listing, and city sales tax is remitted to Centennial.
This is a summary for planning, not tax or legal advice. Rates, ballot outcomes and rules change, so confirm current requirements with the City of Centennial’s Tax & Licensing team and the Colorado Department of Revenue. Anything that needs a tax opinion goes to your CPA.
Centennial owners who want both the city and the numbers handled.
Professional and tech services
Consultants, IT and engineering firms, and agencies serving Centennial’s larger employers, who need clean books, project profit and a clear view of cash.
Retail and product businesses
Shops and makers collecting Centennial sales tax who want state and city returns that match their books, and a ready plan if the rate changes.
Licensed short-term rental owners
Hosts with licensed Centennial rentals who need per-property books, city sales tax tracked, and numbers they can trust at tax time.
Contractors and trades
Remodelers, HVAC, landscaping and other trades working across Centennial’s neighborhoods who need job costing and profit by project.
Three steps from messy to monthly.
Most Centennial clients start with a review of their file, then settle into a monthly rhythm. Meetings happen in Centennial, at the Sterling Ranch office along C-470, or on Google Meet.
A free look at your file
Give Kellcat read-only access to QuickBooks Online or Xero. You get a written read on your books, how sales tax is split between Colorado and Centennial, and a live dashboard of six core numbers.
A walkthrough, your way
Go through the findings face to face in Centennial or Sterling Ranch, or over Google Meet if that’s easier for your schedule.
A steady monthly close
Every month: bank and card accounts reconciled, Colorado and Centennial tax accounts tied out, and the dashboard refreshed. KPI reports and cash flow advisory are there when you’re ready for them.
What Kellcat does for Centennial businesses.
Three layers, each built on the one before: clean books, a clear picture of your numbers, and confident decisions about cash. Start with the layer you need, add the next when you’re ready, and each one is set up for a city that collects its own tax.
Clean Books
Monthly bookkeeping in QuickBooks, Xero, or your current platform, reconciled, reviewed for accuracy, and tax-ready for your CPA, with a core dashboard and a short monthly email summary.
Clear Picture
Custom dashboards that connect your accounting, sales, and operations data into one view, with a KPI report and short action plan every two weeks.
Confident Decisions
Your Cash Map (a rolling 13-week view of cash in and out, plus a simple plan for where your money goes), weekly KPI and cash reports, with up to two calls a month to decide next steps.
Books cleanup or catch-up
Behind by a few months or more? Your books are brought current first, as a separate step quoted up front after a free review of your file. Most cleanups start at $500.
Rental property books
Each property tracked on its own: payouts, platform fees, cleaning, repairs and loan activity, with lender-ready reports.
Budgeting & scenario planning
A yearly plan, budget vs. actual, and “what if” scenarios for bigger moves, built on your monthly numbers.
From Southglenn to Dove Valley.
Neighborhoods
Home-based businesses and real estate investors across Centennial’s neighborhoods get the same monthly close and dashboard, with in-person meetings when they help.
Business areas
Retailers at SouthGlenn, offices along Arapahoe Road, and companies in the Dove Valley business park near Centennial Airport, all a short drive from Kellcat’s Sterling Ranch office.
Answers for Centennial business owners.
What is the sales tax rate in Centennial?
The combined rate is 6.75%: 2.5% City of Centennial, 2.9% state, 1% RTD, 0.1% SCFD and 0.25% Arapahoe County. On November 3, 2026, voters decide whether to raise the city rate to 3.5%, so check the city’s sales tax page for the current rate.
Do I file Centennial sales tax with the state?
No. Centennial is a home-rule city that administers and collects its own sales tax. The city’s share is filed on a City of Centennial return, and the state, RTD, SCFD and Arapahoe County shares go on your Colorado Department of Revenue return.
Does every Centennial business need a license?
Every business operating in Centennial needs either a City of Centennial Sales Tax License or a Business Registration. Businesses that sell taxable goods need the sales tax license; others with a physical location in the city need a Business Registration.
Can I run a short-term rental in Centennial?
Yes, with a license. Each short-term rental needs a City of Centennial STR license, which costs $150 per property per year plus a one-time $50 application fee. The license number must be posted on every advertisement, and city sales tax is remitted to Centennial.
Is Kellcat located in Centennial?
Kellcat’s office is in Sterling Ranch in Littleton, southwest of Centennial along C-470. Centennial clients can meet at their own office, at Kellcat’s, or on Google Meet, and the monthly bookkeeping itself is done through secure online access.
Does Kellcat file my sales tax returns or do my taxes?
Kellcat keeps your books reconciled, tracks state and city sales tax, and gets the numbers ready for each return. Income tax returns are prepared and filed by your CPA, and anything that needs a tax opinion is passed to your CPA.
Centennial books, right with the city and the state.
A free conversation about your books, your sales tax setup and what to fix first.
Not in Centennial? See all service areas, bookkeeping in Highlands Ranch or Littleton and south Denver. Outside the Denver area? See online bookkeeping, anywhere in the U.S.