Colorado Has a Flat Tax.
That Doesn't Mean
Your Tax Strategy Is Simple.
From Denver to Grand Junction, Fort Collins to Durango — Colorado's growing businesses are navigating a tax environment that's more complex than the flat rate suggests.
Bookkeeping, payroll, Controller, and CFO services built for Colorado businesses — construction, technology, outdoor industry, and professional services. We build the financial infrastructure that lets you stop managing chaos and start making decisions. SALT cap planning, cash flow forecasting, and lender-ready books — all of it.
Every service below is available to Colorado businesses — delivered remotely with the same depth as a local firm, and built around Colorado's specific industries, compliance requirements, and growth environment.
Colorado's Flat Tax Isn't the Whole Story.
The SALT Cap Is Where It Gets Expensive.
Colorado has a flat 4.4% state income tax — one of the simpler state tax structures in the country. But the federal $10,000 SALT deduction cap means most Colorado business owners can't deduct that state tax on their federal return. And there's a fix most aren't using.
The SALT Cap Costs Colorado Owners Real Money
Colorado's 4.4% flat tax on $300K of business income = $13,200 in state tax. Federal SALT cap = $10,000 deduction. That's $3,200 in state tax you're paying with no federal offset — at a 37% federal rate, that's an extra $1,184 in federal taxes you didn't have to pay.
For higher-income business owners, the gap is significantly larger.
Colorado's Pass-Through Entity Tax Election
Colorado enacted a pass-through entity (PTE) tax election that allows S-Corps and partnerships to pay state income tax at the entity level. This payment is fully deductible as a business expense — effectively bypassing the SALT cap entirely.
This is one of the most valuable tax planning tools available to Colorado business owners right now. Most aren't using it.
Four Variables We Optimize for Every Colorado Client
PTE election timing and mechanics
Entity structure (S-Corp vs. partnership vs. C-Corp)
Owner compensation vs. distribution optimization
Multi-state nexus and apportionment (for WA/ID/MT/CO businesses)
Real Situations.
Real Outcomes.
Every service we offer is built around a problem Colorado business owners actually face. Here's what that looks like in practice — and what becomes possible when the financial foundation is right.
When the Bank Says No — And the Books Are Why
Picture a Fort Collins general contractor — two crews, about $520,000 in revenue, busy enough that the owner is managing jobs six days a week. He goes to Elevations Credit Union for a $75,000 equipment line to buy a skid steer and a new work trailer. The bank says no. Not because the business isn't making money — it probably is. But the books are a mess. Business expenses are mixed with personal spending. There's no job costing. The P&L looks like a disaster even though cash is coming in. This is one of the most common situations we see with small contractors across the Front Range.
Clean financials unlock things that messy books never can: a readable P&L that shows true profitability by job, a balance sheet that supports a credit application, and a clear picture of what the business actually earns. A Fort Collins contractor at $520K with proper job costing and clean separation between business and personal is a fundable business. The same contractor with mixed books isn't — regardless of how busy the crews are.
$75K
Equipment line — the difference between clean books and mixed ones
The Books Looked Fine. They Weren't.
A client came to us after working with a cheaper bookkeeping service for several years. On the surface, the books looked okay — revenue was being recorded, expenses were being tracked. But when we reviewed the books in detail, we found two problems that had been compounding quietly for years. First: the owner had been making capital contributions to the business — putting their own money in to cover slow months — and those contributions had been coded as revenue. That inflated taxable income every single year.
Second: equipment purchases had been coded as owner contributions instead of fixed assets. That meant the business never took the depreciation deductions it was entitled to. Thousands of dollars in write-offs, gone. When we corrected the coding, the picture changed significantly. The owner was prepared to keep paying $60,000+ in taxes they didn't owe. They didn't have to. A cheaper bookkeeper records what happens. A good one understands what it means.
$60K+
In taxes the owner was prepared to keep paying — until the books were actually reviewed
From $600K to $3.1M — Without the Owner Having to Be There Every Day
Here's what a Denver landscaping company at $600,000 in revenue typically looks like: the owner is doing everything — estimating, managing crews, invoicing, and trying to keep up with the books on Sunday nights. She knows she's leaving money on the table but doesn't know where. She can't take a vacation. She can't hire an operations manager because she doesn't know if she can afford one. She is the bottleneck in her own business.
The path from $600K to $3.1M isn't about working harder — it's about building the financial infrastructure that lets the business run without the owner being the answer to every question. That starts with a real P&L that shows which service types and neighborhoods are actually profitable. Then a simple dashboard: revenue by crew, overhead as a percentage of revenue, a 13-week cash flow forecast. With that foundation, an owner can hire, delegate, and grow — because the numbers tell the story clearly.
$600K → $3.1M
What the maturity ladder looks like when financial systems keep pace with growth
When the Offer Comes, You Have 3 Weeks or 9 Months
Here's what acquisition readiness actually looks like in practice. A Boulder tech services company — 22 employees, $5.1M in revenue, eight years of steady growth — gets contacted by a PE-backed IT services rollup. The owner wasn't actively looking to sell. But the offer was real, and the number was interesting. What happens next depends entirely on one thing: whether the books are already right.
If the financials are clean, auditable, and consistently maintained — three years of management reporting, proper revenue recognition, clean separation of service lines — due diligence takes three weeks. If they're not, it takes six to nine months to reconstruct, and half the time the deal falls apart in the process. The difference isn't luck. It's whether the financial foundation was built before the opportunity arrived.
3 Weeks
To close due diligence — versus 6-9 months if the books aren't already right
What Colorado Businesses Look Like After Working With 406
“You know your break-even. You know your margin by job. You know what growth will cost before you commit to it.”
Tax Liability Is Optimized
PTE election in place. Entity structure right for your situation. Owner compensation and distributions balanced. SALT cap impact minimized.
Cash Flow Is Visible
13-week rolling forecast updated weekly. Seasonal gaps visible months in advance. No more surprises in the slow months.
Books Are Clean and Current
Monthly close completed within 10 days. Financial statements you can actually use to make decisions — not just tax compliance documents.
Banking Relationships Work
Financials prepared to pass underwriting review. Credit facilities in place before you need them. Lender conversations that go the way you want.
Owner Is Out of the Weeds
Financial decisions don't all run through you anymore. The team has the reporting and systems they need. You're working on the business, not in it.
Growth Is Planned, Not Reactive
You know your break-even. You know your margin by job or service line. You know what growth will cost before you commit to it.
We're Not a National Firm
That Added Colorado to a Dropdown.
Most national accounting firms have a Colorado office. Most of them are staffed by people who understand the Denver metro — and not much else. If you're in Grand Junction, Durango, or the Western Slope, you're often getting advice built for a different market.
We work with Colorado businesses because we have clients there and understand the specific financial challenges of the Mountain West — the seasonal cash flow patterns, the construction economy, the SALT cap planning opportunities, and the banking relationships that matter.
We Understand the SALT Cap Problem
Colorado's 4.4% flat income tax is real money — and the $10,000 federal SALT deduction cap means most Colorado business owners can't deduct it. We build entity structures, compensation strategies, and timing decisions that minimize the combined federal and state tax burden. This isn't generic tax advice. It's Colorado-specific planning.
We Serve Both the Front Range and Western Slope
Most Colorado accounting firms are built around the Denver metro. If you're in Grand Junction, Durango, Montrose, or Glenwood Springs, you're often working with a firm that doesn't understand your market, your industries, or the specific financial challenges of Western Colorado. We do.
We Understand Colorado's Two Economies
The Front Range and the Western Slope are fundamentally different markets. Denver contractors face different challenges than Grand Junction energy businesses or Durango tourism operators. We serve both — and we don't give Front Range advice to Western Slope clients.
Remote-First, Mountain West Rooted
We serve businesses across Colorado — Denver, Colorado Springs, Fort Collins, Boulder, Grand Junction, Durango, and beyond. Our team is set up for remote collaboration — cloud-based accounting, video calls, and real-time dashboards — so geography is never a barrier.
Colorado Communities We Serve
From the Front Range to the Western Slope — we serve Colorado businesses remotely with the same depth as a local firm.
Denver & Front Range
Colorado's economic engine. Denver, Aurora, Lakewood, Arvada, Westminster, and Englewood — a competitive, fast-moving business environment where financial infrastructure often lags behind revenue growth.
Colorado Springs
A military-adjacent economy with strong trades, construction, and professional services sectors. Colorado Springs businesses often have stable revenue but underdeveloped financial systems and tax planning.
Fort Collins & Northern Colorado
A university town with a diverse economy — trades, agriculture, technology, and a growing professional services sector. Fort Collins businesses often have strong revenue but need better financial infrastructure.
Grand Junction & Western Slope
Energy, agriculture, trades, and tourism. The Western Slope has a fundamentally different economy from the Front Range — and most Colorado accounting firms don't understand it. We do.
Mountain Resort Towns
Aspen, Vail, Telluride, Steamboat Springs, Breckenridge — extreme seasonal cash flow, high-cost labor markets, and the financial complexity of running a business in one of the most expensive real estate markets in the country.
Durango & Southwest Colorado
A trades and tourism economy with strong construction, outdoor recreation, and professional services sectors. Durango businesses often need better cash flow management and tax planning.
Three Ways Colorado Businesses
Work With 406
Get the Books Right & Optimize Your Tax Structure
Clean up the books. Get the monthly close running on time. Implement the PTE election if it applies. Build the reporting foundation. Most Colorado businesses need this before anything else.
Get Control of Cash Flow
Build the 13-week cash flow forecast. Identify the seasonal gaps before they hit. Get a line of credit in place. Build the financial visibility that lets you make decisions instead of react to them.
Build for Growth or Exit
Build the financial infrastructure for the next stage — whether that's adding locations, hiring key people, acquiring a competitor, or positioning for a sale. This is where the real value of financial leadership shows up.
What We Offer Colorado Businesses
Controller Services
Monthly close, reporting, and financial oversight for $2M–$20M Colorado businesses
CFO Services
Strategic financial leadership — cash flow, growth planning, lender relationships
Bookkeeping
Clean, accurate books that actually reflect how your business operates
Tax Planning
Proactive strategy — SALT cap mitigation, entity structure, S-Corp elections, owner compensation
Tax Preparation
Business returns done right — 1065, 1120-S, 1120, Schedule C
Payroll
Compliant payroll processing with Colorado-specific requirements
Tax Resolution
IRS and Colorado DOR resolution — back taxes, liens, penalty abatement, and installment agreements for Colorado businesses
Business Advisory
Financial health checkups, system builds, and growth readiness assessments
Colorado Business Owners Ask Us
What 406 Has Done for Businesses Like Yours
View all case studies$8M to $40M Without Outgrowing Financial Systems
- Owner signs checks once/month — not buried in daily ops
- Scaled 5× with financial systems that kept pace
- Acquisition-ready books and controller-level oversight
From Bank Rejection to a $7M SBA Financing Outcome
- Rebuilt books and projections across 5 entities from scratch
- Delivered SBA-grade lender package that positioned the deal
- Restructured $7M in debt — saving $20,000/month
Interim CFO Through Big 4 Diligence & Cross-Border Acquisition
- Stepped in as Interim CFO — no disruption to operations
- Navigated KPMG due diligence for a Canadian acquirer
- Deal closed on the owners' terms — clean books, clean exit
What Clients Say About Working With 406
“When we came in to sign our taxes, Jason had already filled out the S-Corp election paperwork and walked us through exactly how it would save us $13,000 this year. We didn’t ask for it — he just had it ready. That’s not something we’ve ever experienced from an accountant before.”
Jessie — Multi-Location Ice Cream Shop Owner
S-Corp Election & Tax Planning
“I’ve worked with several consultants over the years. What blew me away was how quickly Carrie understood our entire operation — top to bottom — in less than a month. I’ve never seen anyone do that.”
Steve — Owner-Operator Trucking Company
Business Turnaround & Financial Advisory
The Foundation Has to Be Right Before Strategy Matters
Most Colorado businesses have a tax preparer. Very few have clean books, compliant payroll, and real-time financial visibility. That's the foundation we build first — because without it, every other service is built on sand.
Clean Books, Every Month
Colorado businesses — construction, technology, cannabis, hospitality, and professional services — all need accurate, reconciled financials maintained monthly. We use QuickBooks Online or Xero, categorized correctly for your industry, and ready for your bank, your CPA, or your partners whenever they need it.
Colorado Payroll Done Right
Colorado has FAMLI (Family and Medical Leave Insurance) employer and employee contributions, a state income tax withholding requirement, and a growing remote workforce that creates multi-state payroll complexity. We process payroll accurately and manage all Colorado-specific compliance requirements so you're not exposed.
Colorado Businesses Are Growing Fast.Your Financial Infrastructure Has to Keep Up.
Denver, Boulder, and Fort Collins are among the fastest-growing business markets in the country. The companies that scale successfully share one trait: their financial infrastructure was built ahead of the growth, not after it.
Our Controller and fractional CFO services give Colorado businesses the month-end close, management reporting, SALT cap optimization, and cash flow forecasting that makes growth sustainable — not chaotic.
Month-End Close
Accurate, timely financials every month — not just at tax time.
SALT Cap Optimization
PTE election and entity structuring to recover deductibility.
Management Reporting
P&L, balance sheet, and KPI dashboards built for decisions.
Lender & Investor Ready
Books at the standard banks and investors require — before you need them.
Denver Metro Business Formation by Sector
New business registrations indexed to 2019 baseline. Tech and professional services have led post-pandemic growth — each sector brings distinct financial infrastructure needs.
Illustrative index based on Colorado Secretary of State business registration trends. Actual figures vary by industry classification.
How Financially Healthy Is Your Colorado Business?
6 quick questions across cash visibility, financial systems, and tax strategy. Get a score and a specific recommendation — instantly.
Not Ready to Call? See Exactly How We Work First.
Browse our service pages to understand what Controller, CFO, bookkeeping, and tax planning actually look like — scope, deliverables, and who it’s right for.
How Financially Healthy Is Your Colorado Business?
Take our 6-question Cash Flow Health Quiz. In under 3 minutes, you'll get a score across cash visibility, financial systems, and tax strategy — plus a specific recommendation for where to start.
Take the Free Quiz →Ready to Get Your Colorado Business
on Solid Financial Ground?
Get in Touch. We'll identify what's working, what's not, and what needs to be built first.
Get in TouchServing businesses in Denver, Colorado Springs, Fort Collins, Boulder, Grand Junction, Durango, Aspen, Vail, Telluride, Steamboat Springs, Breckenridge, and communities across Colorado.