Colorado Year-End Payroll Compliance: What Small Business Owners Need to Do Before December 31

Federal Deadlines, Colorado Requirements, and What to Review Before December 31

Published: October 2026 | Last Reviewed: October 21, 2026 | Reflects federal and Colorado payroll requirements for the 2026 year-end

Year-end payroll compliance is one of those things that can feel far away until it is not. By the time most small business owners turn their attention to W-2s, 1099s, and reconciliation, the window to catch errors has already narrowed considerably.

The good news is that most year-end payroll obligations are predictable. The annual filing cycle is familiar, and the steps are manageable when started early enough—even when forms or requirements change. What can create challenges is discovering discrepancies in December that could have been found in October, or overlooking a Colorado-specific requirement that does not always get the same attention as the federal ones.

This guide covers what Colorado employers need to complete before December 31, what is due in early 2027, and what to review now before the deadline pressure starts.

It applies to Colorado employers of any size who process payroll, issue W-2s, 1099s, or have withholding obligations under Colorado or federal law. Journey Payroll & HR partners with Colorado chambers of commerce to bring timely payroll compliance guidance directly to the small business community, and year-end is one of the most important windows of the year to get right.

Key Takeaways for Colorado Employers

Why Year-End Payroll Has a Ripple Effect

Year-end payroll is one of the few moments where everything connects at once. What gets reported on a W-2 ties directly to an employee’s personal tax return. What gets reconciled with the Colorado Department of Revenue ties to withholding filings made throughout the year. What gets submitted to the Social Security Administration ties to earnings records that follow an employee for decades.

A discrepancy at year-end does not stay contained to payroll. It can surface on an employee’s tax return, trigger an IRS notice month or years later. It may require amended filings across multiple agencies simultaneously. Finding and resolving anything out of alignment before December 31 keeps that ripple effect from reaching further than it needs to.

Federal Year-End Deadlines for Colorado Employers

Form W-2: Wage and Tax Statement

W-2s must be furnished to employees and filed with the Social Security Administration by February 1, 2027. The usual January 31 falls on a Sunday in 2027, so the deadline moves to the next business day. W-2s report taxable wages, federal income tax withheld, and Social Security and Medicare taxes withheld for each employee during 2026. Paper W-2 filings must include Form W-3; electronic filings include the equivalent transmittal information. For 2026, employers should also confirm that their W-2 reporting captures cash tips, tipped occupation codes, and qualified overtime where applicable.

Form 1099-NEC: Nonemployee Compensation

1099-NECs must be furnished to applicable independent contractors and filed with the IRS by February 1, 2027. For 2026, the general reporting threshold for business payments for services is $2,000. Exceptions apply, including certain payments to corporations and payments reportable by payment-card or third-party settlement organizations. Payments subject to backup withholding must be reported regardless of amount.

Form 1099-MISC: Miscellaneous Information

The deadline for furnishing most 1099-MISC statements to recipients is February 1, 2027. Statements reporting amounts in boxes 8 or 10 are due February 16, 2027. The IRS filing deadline depends on the method: March 1, 2027 for paper filers and March 31, 2027 for electronic filers. These dates reflect weekend and holiday adjustments.

Form 940: Federal Unemployment Tax

Form 940 is due February 1, 2027 for most employers. If all FUTA tax was deposited in full and on time throughout 2026, the filing deadline extends to February 10, 2027.

For federal year-end filing guidance, visit the IRS Small Business Employment Taxes page.

Colorado-Specific Year-End Requirements

Annual Withholding Reconciliation

Colorado requires employers to submit an annual reconciliation of state income tax withheld during 2026, along with all applicable W-2 and 1099 statements, to the Colorado Department of Revenue by February 1, 2027, because January 31 falls on a Sunday. The reconciliation is submitted through Revenue Online, the Colorado Department of Revenue’s electronic filing portal. Employers with 10 or more employees or 1099 payees are required to file electronically. Employers with fewer than 10 may submit paper statements with DR 1093 or DR 1106, though the Department encourages electronic filing for all employers. Only 1099 statements that include Colorado withholding need to be submitted to the Department.

For Colorado annual reconciliation guidance and Revenue Online access, visit the Colorado Department of Revenue.

FAMLI Year-End Considerations

Colorado has announced a 2027 FAMLI premium rate of 0.86%, down from 0.88% in 2026. Employers should confirm their applicable contribution requirements through My FAMLI+ Employer and update payroll before the first pay run of January. Employers should also complete their annual headcount update when the task becomes available, following the deadline shown in the portal. Headcount determines whether an employer contribution is required and is not a task that payroll service providers are currently allowed to do. Missing the update will cause the state to treat the employer as having 10 or more employees and assess a higher contribution rate.

For FAMLI employer resources, visit Colorado FAMLI.

Colorado Unemployment Insurance

Quarterly unemployment insurance wage reports and premium payments should be current through the third quarter of 2026 before year-end. Prepare the fourth-quarter wage report and premium payment for the regular January 31 deadline, and confirm the applicable weekend adjustment in MyUI Employer+. Confirming that the unemployment insurance account is in good standing and that the experience rating for 2027 has been received and entered correctly in the payroll system helps avoid surprises at the start of the new year.

For unemployment insurance employer guidance, visit the Colorado Department of Labor and Employment.

What to Reconcile Before December 31

Reviewing payroll records before the year closes gives employers more flexibility to address errors. Some withholding corrections must be completed within the same calendar year, and errors on previously filed returns may still require amendments. The following areas are worth reviewing now.

Wages and Withholding

Reconcile 2026 payroll records with draft W-2s and federal and state returns, accounting for differences between gross pay and taxable wages. Federal and state income taxes withheld should align with the deposits and payments made on the required schedules, which are not necessarily quarterly.

Social Security and Medicare

Reconcile Social Security and Medicare taxes with the amounts reported on Form 941. Regular Social Security and Medicare taxes generally have matching employer and employee shares. If the additional Medicare surtax applies, it is not subject to the employer match.

Employee Information Accuracy

W-2 errors caused by incorrect Social Security numbers, legal name mismatches, or outdated addresses can create complications for both the employee and the employer. Confirming employee information before W-2s are generated can help avoid corrections and delays.

Independent Contractor Payments

Confirming that contractors have complete and accurate W-9 information on file is a useful step. Missing information may leave the business without the correct taxpayer identification number needed to file a 1099-NEC accurately.

Fringe Benefits and Imputed Income

Certain employer-provided benefits, such as the taxable cost of group-term life insurance coverage over $50,000, Sub-S Corp insurance, and personal use of a company vehicle, must be included in an employee’s taxable wages. Review these amounts before the final payroll and apply the IRS valuation, withholding, and reporting rules, including any applicable special timing rules.

Payroll System Updates Before January 1, 2027

Before processing the first payroll of 2027, it is worth confirming that the following updates have been made in the payroll system.

The Bottom Line

Year-end payroll compliance comes down to two things: reconciling accurately before December 31 and meeting the applicable filing and payment deadlines. Most of the complexity is manageable with an organized checklist and a timeline that starts now rather than in December.

Journey Payroll & HR helps Colorado employers manage year-end payroll, reconciliation, W-2 and 1099 filing, and the transition into the new payroll year. Learn more at JourneyPayrollHR.com.