2025 Online Payment Instructions
Online Payment Instructions for
Individuals
Extension
Tax Due
Amended
Estimates
Online Payment Instructions for
Businesses
Colorado Pass-Through Entity (PTE) for S-Corps and Partnerships Instructions
Colorado C-Corp Instructions
Federal C-Corp Instructions
- 2025 Federal C-Corp Extension Payments
- 2025 Federal C-Corp Tax Due Payments
- 2026 Federal C-Corp Estimated Payments
Online Payment Instructions for
Trusts, Estates, & Gift
Colorado Payments
- 2025 Colorado Tax Due or Extension Payments – Fiduciary
- NOT REQUIRED – 2026 Colorado Estimated Payments – Fiduciary
Electronic Federal Tax Payment System (EFTPS)
Federal Enrollment
Federal Payments
- 2025 EFTPS Federal Extension Payment – Fiduciary
- 2025 EFTPS Federal Tax Due Payments – Fiduciary
- 2026 EFTPS Federal Estimated Payments – Fiduciary
(303) 499-7445
info@tandemcolorado.com
199 S. Taylor Avenue #400, Louisville, CO 80027
Tandem Advisors
