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2024

Complete Colorado sales tax audit readiness checklist with step-by-step procedures, documentation requirements, and compliance tips.

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2024

Learn how to resolve Colorado unfiled sales tax returns with our step-by-step checklist. Includes filing requirements, deadlines, and penalties.

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2024

Learn how to handle Colorado sales tax nonpayment risk. Step-by-step checklist covers notices, penalties, payment plans, and how to avoid license suspension.

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2024

Learn how to resolve Colorado payroll tax default issues with state agencies. Complete checklist covering withholding, UI, and FAMLI compliance steps.

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2024

Learn how to set up Colorado Payroll Tax Payment Plan Options for your business. Step-by-step checklist with compliance requirements and contact info.

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2024

Navigate Colorado Payroll Tax Enforcement & Liens with our complete guide. Learn collection timelines, response steps, and resolution options.

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2024

Learn how Colorado payroll tax penalties & interest work, verification steps, payment options, relief requests, and avoid collection actions.

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2024

Learn how to file unemployment insurance wage reports with CDLE and Form DR 1094 withholding returns with Colorado DOR to avoid penalties and compliance issues.

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2024

Learn how to address Colorado wage withholding tax nonpayment with filing schedules, penalty details, and essential steps to resolve issues with the state.

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2024

Learn about Colorado state tax enforcement notices, the 30-day Notice of Deficiency deadline, payment plans, and how to respond to collection actions.

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2024

Learn about Colorado tax collection enforcement actions, including liens lasting six years, 25% wage levies, critical deadlines, and payment options.

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2024

Learn how to respond to Colorado Department of Revenue tax notices, including Notice of Intent to Issue Judgment/Lien, payment plans, and deadlines.

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2024

Learn how Colorado tax lien enforcement works, including wage garnishment rates, payment plan options, and steps to take after receiving a collections notice.

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2024

Learn how the Colorado Department of Revenue enforces tax collection through liens, levies, and wage garnishment, plus essential steps to respond to notices.

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2024

Learn how Colorado tax levies work, including the 25% wage levy rate, hardship options, and key differences from court-ordered garnishments.

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Why Our IRS Forms Library Is Better Than IRS.gov

1

All Federal Forms 2010–2025

IRS.gov only shows the current year, with older forms buried in deep, broken archives.
We make them easy.
2

Fillable PDFs + Step-by-Step Guides

Most IRS links only offer the form.
We add summaries, guides, and checklists to help you avoid mistakes.
3

Organized for Real People

No confusing menus. No archive hunting.
Everything is structured by year, type, and purpose.

Need help choosing the right form?

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 Federal Tax Return Forms (2010–2025)

 If you’re filing back tax years, you must use the correct-year form. Every 1040, 1120, 1120-S, 1065, and corresponding schedule is available here for 2010–2025.

Individual Returns (1040 Series)

  • 1040 (all years)
  • 1040-SR
  • 1040-X (Amended)
  • All schedules (A, B, C, D, E, SE, 8812, etc.)

Business Returns

  • 1120
  • 1120-S
  • 1065
  • 990 series (nonprofits)
  • K-1 forms

Payroll Returns

  • 941 / 941-X
  • 944
  • 940
  • Schedule B
  • SS-4
  • 2678

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IRS Tax Relief & Collection Forms (Current Year Only)

These forms are used for payment plans, penalty abatement, notices, and tax debt resolution. The IRS requires the newest version, even when resolving older tax years.

Key Forms

  • 2848 — Power of Attorney
  • 8821 — Information Authorization
  • 9465 — Installment Agreement
  • 433-F — Collection Information Statement
  • 433-A / 433-B — Financial Statements
  • 433-D — Direct Debit Installment Agreement
  • 433-H — Wage Garnishment
  • 656 — Offer in Compromise
  • 656-L — Doubt as to Liability
  • 12153 — Collection Due Process
  • 8857 — Innocent Spouse
  • 911 — Taxpayer Advocate
  • 4180 — Trust Fund Recovery Penalty Interview
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Browse IRS Forms by Category

 If you’re filing back tax years, you must use the correct-year form. Every 1040, 1120, 1120-S, 1065, and corresponding schedule is available here for 2010–2025.

Tax Return Forms (2010–2025)

Individual, Business, Payroll

Amended Returns

1040-X, 1120X, 1065X

Tax Relief & Collection Forms

433-F, 9465, 656, 2848

Business Tax Forms

1120, 1120-S, 1065

Payroll Tax Forms

941, 940, 944, Schedule B

Notice Response Forms

CDP appeals, penalty relief, advocate requests

As Seen On

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