Tax problems can quickly become overwhelming, but the right professional help can make a big difference. In this guide, we compare the best tax relief companies in Colorado, including firms serving Denver, Aurora, Colorado Springs, Boulder, Broomfield, Westminster, Northglenn and Longmont.
Last updated: September 30, 2026. Ratings, BBB grades and company details were checked on September 30, 2026.
Quick Comparison: Best Tax Relief Companies in Colorado
| Company | Founded | Trustpilot | BBB | Team | Pricing | Refund | |
|---|---|---|---|---|---|---|---|
| Precision Tax Relief | 1967 | 4.9 (337) | 4.9 (2,114) | A+, accredited | EAs, CPAs, Attorney | Flat fee | 30 days |
| 20/20 Tax Resolution | 1998 | 4.8 (890) | 2.9 (2) | A+, accredited | EAs | Not published | Not stated |
| Timberline Tax Group | 2016 | 4.9 (398) | 4.9 (191) | A+, accredited | EAs, Attorney | Not published | 15 days |
| Boxelder Consulting & Tax Relief | 2015 | 4.7 (272) | 4.6 (176) | A+, accredited | EAs, CPAs, Attorney | Not published | Not stated |
| Larson Tax Relief | 2005 | 4.5 (254) | 4.7 (404) | A+, accredited | EAs | Not published | 30 days |
| Reliance Tax Group | 2016 | 5.0 (200) | 4.9 (110) | A+, not accredited | EA | Flat fee | Not stated |
| Sequoia Tax Relief | 2017 | 4.7 (162) | – | A+, accredited | EAs | Not published | 15 days |
| Dickmann Tax Group | 2013 | 4.9 (141) | – | A+, accredited | EAs | $2,500–$7,500+ | Not stated |
| BC Tax | 2002 | 4.3 (140) | 4.0 (37) | A+, accredited | EAs, CPAs | Not published | 15 days |
| Kutler Tax Resolution | 2013 | 4.1 (114) | – | A+, accredited | EAs | Not published | Not stated |
| Advanced Tax Solutions | 1994 | 4.5 (102) | 4.7 (125) | A+, accredited | EAs, CPAs, Attorney | Quoted upfront | Not stated |
| Blueprint Resolution Services | 2017 | 4.9 (74) | 4.8 (70) | A+, accredited | EAs, Attorneys | Not published | Not stated |
Ratings checked on September 30, 2026. The Google and Trustpilot columns show the rating followed by the number of reviews; EA = Enrolled Agent. Ratings and BBB grades change often, so check the source before you decide. “Founded” uses the year the firm publishes, or the BBB start year when it doesn’t publish one. “Refund” is the money-back window the firm publishes. “Not published” or “Not stated” means we couldn’t find it on the firm’s website.
Disclosure: this guide is published by Precision Tax Relief. We include ourselves in the comparison and list our own limitations the same way we list everyone else’s. See how we chose these companies.
Top IRS Debt Relief Companies in Colorado
Precision Tax Relief
Works with Colorado clients remotely.
Pros:
- Flat-fee pricing with no-interest payment plans
- 30-day money-back guarantee
- In-house team of Enrolled Agents, CPAs and a tax attorney
- BBB A+, accredited since 2011; 2024 BBB International Torch Award for Ethics (also BBB Torch Awards 2023 and 2019)
- Named “Best for customer service” in CNBC Select’s Best Tax Relief Companies (updated September 2026)
- Rated 4.9 on Google (337 reviews) and 4.9 on Trustpilot (2,114 reviews)
Cons:
- Not a good fit if you owe less than $10,000. For smaller balances, setting up an IRS payment plan yourself is often cheaper.
- We don’t take state-only tax cases. State tax debt is handled only alongside an IRS case.
Best for: Federal (IRS) tax debt of $10,000 or more, if you want one flat fee agreed upfront.
20/20 Tax Resolution
Pros:
- Largest review base in Colorado: 4.8 on Google (890 reviews)
- In business since 1998; BBB accredited since 1999
- Handles IRS and state tax debt
Cons:
- Pricing not published
- No money-back guarantee stated
- Only 2 Trustpilot reviews
Best for: People who want a long-established Colorado firm with a large review history.
Timberline Tax Group
Pros:
- Google 4.9 (398 reviews) and Trustpilot 4.9 (191 reviews)
- Enrolled Agents plus an attorney on staff
- 15-day full refund
- Handles IRS and state tax debt
Cons:
- Pricing not published
- Marketing targets balances over $10,000
Best for: IRS or state debt over $10,000 with a highly rated team.
Boxelder Consulting & Tax Relief
Pros:
- Google 4.7 (272 reviews), Trustpilot 4.6 (176 reviews)
- Tax attorney, CPAs and Enrolled Agents on the team
- Also offers bookkeeping and business tax services
Cons:
- Pricing not published
- No money-back guarantee stated
Best for: Small business owners who need tax resolution and bookkeeping together.
Larson Tax Relief
Pros:
- In business since 2005
- Trustpilot 4.7 (404 reviews)
- 30-day “Right Fit” refund guarantee
- Colorado Top Workplaces 2020; BBB Torch Award for Customer Service 2014
Cons:
- Most BBB complaints on this list (9 in the last 3 years)
- Pricing not published
Best for: People who want a long-established nationwide firm.
Reliance Tax Group
Pros:
- Google 5.0 (200 reviews), Trustpilot 4.9 (110 reviews)
- Guaranteed flat-rate pricing
- Handles IRS and state tax debt
Cons:
- Typically works with balances of $25,000 or more
- Not BBB accredited (rated A+)
Best for: Larger balances ($25,000+) with flat-rate pricing.
Sequoia Tax Relief
Pros:
- Google 4.7 (162 reviews)
- Team of Enrolled Agents
- Full refund within 15 days, partial refund up to 30 days
- Veteran-owned
Cons:
- Pricing not published
- No Trustpilot profile
Best for: People who want a clear refund policy.
Dickmann Tax Group
Pros:
- Google 4.9 (141 reviews); BBB review average 5.0 (52 reviews)
- One of the few firms that publishes a price range ($2,500–$7,500+)
- Handles IRS and state tax debt
Cons:
- No refund terms published
- No Trustpilot profile
Best for: People who want to know the likely cost before calling.
BC Tax
Pros:
- Operating since 2002
- Enrolled Agents and CPAs
- 15-day money-back guarantee
- Handles IRS and state tax debt
Cons:
- Lower ratings than most firms here (Google 4.3, Trustpilot 4.0)
- Pricing not published
Best for: People who want a long-running firm with a money-back period.
Kutler Tax Resolution
Pros:
- BBB review average 4.9 (61 reviews)
- Team of Enrolled Agents
- Handles IRS and state tax debt
Cons:
- Lowest Google rating on this list (4.1)
- Pricing not published; contact form requires $10,000+
Best for: Balances over $10,000 in the Denver area.
Advanced Tax Solutions
Pros:
- Serving Colorado since 1994
- CPAs, Enrolled Agents and a tax attorney
- Written fee outline before any work starts
- Represents clients before the IRS and state revenue departments
Cons:
- Mostly focused on the Denver metro area
- No money-back guarantee stated
Best for: Unfiled returns plus IRS or state debt, handled by a CPA firm.
Blueprint Resolution Services
Pros:
- Google 4.9 (74 reviews), Trustpilot 4.8 (70 reviews)
- Enrolled Agents and attorneys on staff
Cons:
- Pricing not published
- Website doesn’t say whether it handles state tax
- Smaller review base
Best for: Business tax debt with a mixed EA/attorney team.
Tax Relief by Area in Colorado
Denver
Denver has the widest choice, including Boxelder Consulting, Dickmann Tax Group, Kutler Tax Resolution, Advanced Tax Solutions and Blueprint Resolution Services.
North Metro Denver: Broomfield, Westminster and Northglenn
Several of the state’s most-reviewed firms are based in the North Metro area, including 20/20 Tax Resolution, Larson Tax Relief, Reliance Tax Group, Sequoia Tax Relief and BC Tax.
Boulder, Louisville and Longmont
Timberline Tax Group in Louisville is the most highly rated firm we found in Boulder County, with 4.9 stars on both Google and Trustpilot.
Colorado Springs and Southern Colorado
Colorado Springs has fewer dedicated tax resolution firms. Most residents work with Denver-area or national firms remotely. The IRS and the Colorado Department of Revenue both have offices in Colorado Springs for in-person questions.
Colorado-Specific Tax Relief Insights
Colorado state taxes are handled by the Colorado Department of Revenue (CDOR), whose collection rules differ from the IRS. CDOR can file state tax liens and levies, and it offers its own installment plans. Colorado and IRS debts need separate agreements, and filing your return on time, even if you can’t pay, prevents extra penalties.
Tax Attorney or Tax Relief Company?
Many people search for a tax attorney when they get an IRS notice. For most collection problems (back taxes, payment plans, liens, levies and wage garnishments), an Enrolled Agent or CPA can represent you before the IRS just like an attorney can. A tax attorney is usually worth it if you face possible criminal exposure, tax court litigation, or complex business or estate issues. Several firms on this list have Enrolled Agents, CPAs and attorneys on the same team.
Free Tax Help in Colorado
If you owe less than $10,000, or only owe state tax, you may not need a paid firm at all:
- Colorado Department of Revenue – Community Tax Help: help and payment options for Colorado state tax debt (which we don’t handle on its own).
- IRS payment plans: many people can set up an installment agreement online in minutes.
- Taxpayer Advocate Service: free, independent help inside the IRS when a problem isn’t getting solved.
- Low Income Taxpayer Clinics: free or low-cost representation if you qualify.
Not sure where to start? Contact us for a free consultation. If you owe less than $10,000 or only owe state tax, we’ll tell you and point you to a better option.
Frequently Asked Questions
Check four things before you sign: who will work your case (an Enrolled Agent, CPA or tax attorney who can represent you before the IRS), whether you get a written fee quote upfront, the refund policy, and recent reviews on Google, Trustpilot and BBB. Be careful with any company that promises a specific settlement before it has reviewed your IRS transcripts.
Most IRS representation happens by phone, mail and the IRS e-Services system, and a power of attorney (Form 2848) works in every state. A local firm helps if you want to meet in person; a remote firm can work just as well for most collection cases.
The Colorado Department of Revenue offers payment plans for state tax debt. You can request one through its Revenue Online portal or by contacting the Department. See Community Tax Help for free assistance.
Yes. Like the IRS, the Colorado Department of Revenue can file state tax liens and levy wages or bank accounts for unpaid state tax. State and IRS debts are handled separately, so an IRS payment plan does not stop Colorado collection.
Only alongside an IRS case. If you owe only Colorado state tax, contact the Colorado Department of Revenue directly or a local firm that handles state tax, which is usually the faster and cheaper route.
Most firms don’t publish prices. One Denver firm on our list publishes a typical range of $2,500 to $7,500+ for full representation, and complex cases can cost more. Ask for a written quote and a clear refund policy. For balances under $10,000, an IRS payment plan you set up yourself is often the cheapest option.
Yes. You can set up many IRS payment plans online for free, the Taxpayer Advocate Service helps when an IRS problem isn’t getting solved, and Low Income Taxpayer Clinics offer free or low-cost representation if you qualify.
Colorado does not impose a state-level estate tax. The state’s estate tax was effectively eliminated after December 31, 2004, following changes in federal law that phased out the state death tax credit. However, residents are still subject to the federal estate tax, which applies to estates exceeding the federal exemption threshold.
Colorado imposes property taxes, which are administered at the county level. The state has some of the lowest residential property taxes in the country. However, property tax rates can vary by county due to differences in local mill levies and assessment rates. Property tax is paid through your county treasurer’s office, online, by mail or in person.
The IRS generally has 10 years from the date a tax is assessed to collect it. That deadline is your Collection Statute Expiration Date, and your IRS account transcript shows it. The Colorado Department of Revenue collects state tax debt under its own state-law timeline, so do not assume a Colorado balance expires when a federal one does. Check each balance separately. Calculate your CSED.
A wage levy means a tax agency has started taking part of your pay directly from your employer because a balance is unpaid and no payment arrangement is in place. Check the paperwork your employer received: an IRS wage levy arrives on Form 668-W, while a state wage garnishment comes from the Colorado Department of Revenue on its own notice. Each one has to be released separately, so stopping an IRS levy does not stop a Colorado one.
Treat them as two separate cases. File every return on time even if you cannot pay, because the failure-to-file penalty runs ten times higher than the failure-to-pay penalty. With the IRS you can request an installment agreement, an Offer in Compromise, or currently not collectible status. The Colorado Department of Revenue runs its own payment plans through its Revenue Online portal, and an IRS agreement does not cover a Colorado balance.
No. Fresh Start is a set of IRS changes, covering easier installment agreements, a higher lien filing threshold and more flexible Offer in Compromise terms, and it applies only to federal tax debt. Colorado state tax debt is handled separately by the Colorado Department of Revenue under its own rules, so a federal Fresh Start agreement leaves a Colorado balance untouched.
Do the federal years first. Request your IRS wage and income transcripts to rebuild the years you are missing, file each year on that year’s own form, and send them in. Then file the matching Colorado returns, because a Colorado return starts from your federal taxable income and cannot be completed until the federal year is filed. More on clearing back taxes.
No. Colorado levies a flat state income tax and continues to do so. The rate has been trimmed in some years under the Taxpayer’s Bill of Rights when the state collects a surplus, so check the Colorado Department of Revenue for the rate that applies to the year you are filing.
Colorado has a relatively low state income tax and property tax. Combined state and local sales taxes can be high in certain counties, though, because of additional local levies.
How We Chose These Companies
- We searched Google Maps for tax relief and tax resolution firms in Colorado’s largest cities and kept firms that focus on resolving IRS and state tax debt, not general tax preparation.
- Each firm needed a Google rating of 4.0 or higher with at least 30 reviews. We then checked its BBB profile, Trustpilot page and website.
- We compared founding year, ratings, BBB grade and accreditation, team credentials, pricing transparency and refund policy. Where a firm publishes a minimum debt amount, we note it in that firm’s section rather than the comparison table.
- No firm on this list, including us, publishes an independently audited success rate, so we don’t rank by success rate.
- We excluded listings we couldn’t verify, such as businesses with very few reviews spread across many cities.
