Bookkeeper · Littleton, CO · South Denver Metro
Clean books and clear numbers for your south Denver business.
Kellcat keeps your books accurate every month and gives you a live dashboard so you can see where you stand any day. When you want more, add KPI reports and a Cash Map, a rolling 13-week view of your cash, to decide where to go next. Built for growing businesses and real estate investors.
- Books closed and reconciled every month
- Profit, cash, and trends at a glance, any day
- Decisions made with confidence, not guesswork
9:00 am – 5:30 pm MT
Bookkeeping Services
Bookkeeping, dashboards, and advisory in one place.
Start with clean books. Add a live view of your numbers. Then use them to make confident decisions.
Clean Books
Monthly bookkeeping and reconciliation in QuickBooks Online, Xero, or Puzzle, with a core dashboard, a short monthly summary, and a check-in call every quarter.
Monthly bookkeeping →Clear Picture
Custom dashboards built in Databox that show where your business stands any day, with KPI reports every two weeks and a monthly video walkthrough.
Dashboard examples →Confident Decisions
Cash flow advisory: a 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, and up to two calls a month to review your cash and plan what's next.
Cash flow forecasting →QuickBooks Cleanup
Messy or behind books cleaned up, caught up, and set up correctly, scoped after a free review of your file. Most cleanups start at $500.
QuickBooks cleanup →Client Reviews
What south Denver clients are saying.
5.0 rating on Google
"I had a fantastic experience with Brian from Kellcat Bookkeeping. His knowledge in the field was truly impressive. I left feeling confident and well taken care of, knowing that my financial records are in good hands. Brian cleaned up our books, and continually strives to keep everything running smoothly and correctly, and is always available when I need him. In addition, he is absolutely a pleasure to work with. I would highly recommend Brian from Kellcat Bookkeeping to anyone in need of bookkeeping services in Denver, Colorado and beyond."
Business OwnerGoogle
"Brian has been very great to work with and help refine our QuickBooks Online. I'm working on flipping houses, and Brian has reviewed our settlement statements to track every thing properly as well as provide some insight into how others track costs to optimize reporting/visibility."
Fix & Flip InvestorGoogle
"I recently had the pleasure of working with Brian for bookkeeping services for my Denver based business, and I must say, he is not only incredibly knowledgeable but also genuinely kind. His attention to detail and professionalism truly made a difference in my experience. Despite the sometimes daunting task of bookkeeping, Brian's approach made it seamless and stress-free. I left feeling confident and organized, knowing that my finances were in good hands. Brian's friendly demeanor and expertise truly set this service apart."
Business Owner · Denver, COGoogle
Why Kellcat
Not just a bookkeeper. A financial systems partner.
Most bookkeepers reconcile your accounts and send a report. Kellcat builds the whole financial back office: a clean monthly close, a live dashboard that answers your questions in seconds, and, when you want it, cash flow advisory to plan what's next with you.
Systems built right the first time
11+ years of software engineering means every reconciliation, category, and monthly close is built with precision, not just processed and filed.
Modern tools that work together
QuickBooks, Xero, Puzzle, Mercury, Ramp, Gusto, and Rippling, configured for how your business actually runs.
AI assists. People approve.
Every report, summary, and analysis is reviewed and approved by Kellcat before it reaches you. No unreviewed automation touches your books.
Clear lanes with your CPA
Kellcat handles the books and financial systems. Your CPA handles taxes. Tax questions are flagged for your CPA, and year-end is ready on time.
Boundaries built in
Response times are agreed in writing before work begins, so you always know what to expect and when.
Local roots, remote reach
Based in Sterling Ranch, with in-person meetings across the south Denver metro and secure remote service everywhere else.
Who Kellcat Works With
Built for growing businesses and real estate investors in south Denver.
Short-Term Rental Operators
STR owners across the south Denver metro and beyond who want true per-property profit after every fee, cleaning, and repair.
Short-term rental bookkeeping →Fix & Flip Investors
Flippers across the south Denver metro who need project-level costs and the real profit on every deal.
Real estate bookkeeping →Landlords & BRRRR Investors
Investors who need lender-ready portfolio reporting across properties before the next refinance.
Real estate bookkeeping →Contractors & Trades
Contractors in Parker, Castle Rock, Centennial, and Littleton who need job costing and profit by project.
Product & Service Businesses
Restaurants, makers, and service firms that want clean books and a clear view of margins and cash.
Growing Businesses
Companies whose revenue has outgrown their financial systems and who want a live dashboard and a partner, not just a bookkeeper.
Brian Kelly · Founder
A neighbor who happens to know the numbers.
Brian Kelly founded Kellcat in the Sterling Ranch community of Littleton, Colorado. He grew up working in his mother's CPA firm and spent 11+ years as a software engineer building precision systems. Kellcat is where those two worlds meet.
For south Denver business owners and real estate investors, that means clean books built with engineering precision, dashboards that answer your questions, and a local partner who knows both the numbers and the community.
Service Area
Based in Littleton, serving all of south Denver.
Kellcat is based at 9187 Swan River Street in Littleton, in the Sterling Ranch community, and works with growing businesses and real estate investors throughout Douglas, Arapahoe, and Jefferson counties.
Whether you own a long-term rental in Highlands Ranch, a contracting company in Parker, a growing business in Castle Rock, or a professional services firm in Centennial, you get the same clean books, live dashboard, and advisory.
In-person meetings are available across the south Denver metro. Day-to-day work happens through secure access to your accounting software, email, and video calls.
Communities Kellcat serves
Find your city on the Service Areas page →
Outside the Denver area? See online bookkeeping, anywhere in the U.S. →
Common Questions
Questions from south Denver business owners.
Where is Kellcat's office, and do you meet in person?
Do you provide bookkeeping services in Highlands Ranch, Centennial, and Lone Tree?
What bookkeeping services does Kellcat offer in Littleton, CO?
Can Kellcat help real estate investors in the south Denver area?
How much does a bookkeeper cost in Littleton or south Denver?
My QuickBooks is a mess. Can you clean it up?
Do I need a bookkeeper if I already have a CPA?
Do you work with contractors and trades businesses?
How do I get started with Kellcat?
Quick answers
Common questions
What does a bookkeeper in South Denver cost?
At Kellcat, monthly bookkeeping is a flat monthly fee, not hourly billing. The fee depends on your transaction volume, how many bank accounts, cards and entities you have, and how much support you want, and it is confirmed in a written proposal after a free call. You can start with a free Books & Numbers Review to see where your books stand before you decide.
- Kellcat works in three monthly layers: Clean Books (monthly bookkeeping and reconciliations), Clear Picture (live dashboards and analysis of your numbers) and Confident Decisions (cash flow advisory).
- One-time work, such as a books cleanup or a QuickBooks Online setup, is quoted as a flat project price.
- There is no long-term contract: monthly services can be ended with 90 days' notice.
Get a free Books & Numbers Review or book a free Discovery Call.
General information, not tax or legal advice.
Your books, handled by a neighbor. Your numbers, finally clear.
Book a free Discovery Call with Kellcat. Talk through where your business stands today and leave with a clear next step. No pressure, no obligation.
Book a Free Discovery Call