Tax Overview: Colorado
Colorado tax debts are handled by the Colorado Department of Revenue and can trigger liens, levies, and wage garnishments. The state offers installment agreements up to 99 months with financials, but OIC eligibility has a unique requirement: the IRS must have already accepted an OIC before Colorado will consider one. Once a wage garnishment is issued, installment agreements are no longer available, making early intervention critical.
Key Tax Facts
- OIC available BUT only if the IRS has already accepted an OIC — IRS Form 433-A can be used as financial statement
- Installment agreements up to 36 months without financials
- Up to 99 months with financials and manager approval (Form DR 6596)
- Direct debit not required — payments can be made online or by mail
- Missing returns do NOT have to be filed to establish an IA (unusual)
- Once a wage garnishment is issued, IA is NO LONGER available
- Garnishment modification requires Forms DR 6596 & DR 6597 with pay stubs and bank statements
- 6-year collection statute from filing date
Common Tax Issues
The IRS-first OIC requirement makes Colorado settlements rare — you must have a federal OIC accepted before the state will consider one
Wage garnishment eliminates the IA option entirely — taxpayers must act before garnishment is issued
The 99-month extended plan is generous but requires manager approval and full financial documentation
Colorado's TABOR refunds may be offset against outstanding tax debts
Resolution Options in Colorado
Payment Plans (Installment Agreements)
Without financials: Up to 36 months
With financials: Up to 99 months
Up to 99 months with financials and manager approval. Form DR 6596. Direct debit not required. Missing returns do NOT have to be filed to establish an IA.
Offer in Compromise (OIC)
Available: Yes
Does NOT stop collections while pending
Only available if the IRS has already accepted an OIC. IRS Form 433-A can be used as the financial statement.
Wage Garnishment
Rate: Varies
Can lift with payment plan: No
Can reduce amount: Yes
Once garnishment is issued, IA is NO LONGER available. To modify: complete Forms DR 6596 & DR 6597 with two pay stubs, three months of bank statements, and modification proposal amount.
Penalty Abatement
Available: Yes
Bank Levy
Can release: No
Recent Tax Changes
- 2024-2025: Flat rate reduced to 4.4% (from 4.55%) via Proposition 121
- TABOR refunds continue (Colorado refunds excess state revenue to taxpayers)
Official Resources
How Tax Advocate Group Helps Colorado Taxpayers
Whether you're dealing with the IRS, the Colorado Department of Revenue, or both — we provide comprehensive tax resolution services to Colorado residents and businesses.