Starting January 1, 2027, Colorado will generally impose sales tax on Software as a Service (SaaS), cloud-based applications, and electronically delivered software.
Under House Bill 26-1223, Colorado is changing how software is classified for sales tax purposes. Software will generally be taxable regardless of whether customers download it, access it through a browser, or receive it on physical media.
For SaaS companies selling to Colorado customers, the change raises important questions about sales tax registration, enterprise contracts, and billing practices.
Two exemptions remain available, and one may be particularly relevant to B2B software companies.
01What is changing for SaaS companies in Colorado?
Before January 1, 2027, Colorado generally taxes computer software only when three conditions are met: the software is prepackaged for repeated sale or license, governed by a tear-open nonnegotiable license agreement, and delivered on physical media.
As a result, software accessed remotely or delivered electronically has generally not been subject to Colorado state sales tax.
Beginning January 1, 2027, software will generally be taxable regardless of its delivery method.
The new rules may affect:
- SaaS subscriptions and cloud-based applications
- Downloaded software and mobile applications
- Software accessed remotely through the internet
- Standard software licenses and subscription agreements
The treatment of platform, infrastructure, information-processing, and other technology services will depend on what the customer is actually purchasing. Not every service involving software automatically becomes taxable.
02Two important software sales tax exemptions remain
Colorado's new law preserves two exemptions that may be especially relevant to software companies selling to businesses.
1. Individually negotiated software licenses
Software governed by a qualifying negotiated license agreement may remain exempt from Colorado sales tax.
Under Colorado law, the agreement must be individually bargained between the software provider and customer and signed by authorized representatives of both parties before or contemporaneously with the customer's access to or use of the software.
This creates an important distinction between standard SaaS subscriptions and certain enterprise software arrangements.
For example, a customer who signs up for a $99 monthly subscription and accepts standard online terms generally would not qualify.
A business purchasing software under an individually negotiated enterprise agreement may qualify, provided the contract satisfies the statutory requirements.
Simply signing a standard contract is not sufficient.
Colorado specifically excludes standard, form, or boilerplate agreements offered on a nonnegotiable or substantially nonnegotiable basis. Click-through agreements, browse-wrap terms, and automated account-creation acceptance also do not satisfy the signature requirement.
Authenticated electronic signatures, including DocuSign or similar methods, may qualify. However, the contract must still be genuinely negotiated.
For B2B SaaS companies, the nature of the customer agreement could materially affect sales tax treatment.
2. Custom-developed software
Colorado also preserves an exemption for software developed for use by a particular customer.
This generally distinguishes software built specifically for one customer from prewritten software offered to multiple customers.
However, companies should not assume that customizing an existing SaaS platform automatically qualifies the entire product for the exemption.
For example, configuring an existing platform to meet a customer's needs may raise different tax questions than developing entirely new software specifically for that customer.
Companies providing custom development alongside ongoing SaaS subscriptions should evaluate each component of the arrangement.
03Does Colorado's $100,000 economic nexus threshold still apply?
Yes. Colorado generally requires remote sellers to collect sales tax when they have more than $100,000 in Colorado retail sales during the current or previous calendar year.
Importantly, Colorado includes both taxable and nontaxable retail sales when calculating this threshold.
This means that a SaaS company with $150,000 in Colorado subscription sales during 2026 may already exceed the state's economic nexus threshold, even though those subscriptions were generally not taxable at the time.
When the new software tax rules take effect in 2027, that company may be required to collect sales tax immediately.
For companies without physical presence in Colorado, the registration timing generally works as follows:
If Colorado retail sales exceeded $100,000 in 2026: The company generally must be registered and collecting applicable sales tax beginning January 1, 2027.
If the threshold is first exceeded during 2027: The company generally must register and begin collecting by the first day of the first month beginning at least 90 days after crossing the threshold.
For example, a company that first exceeds $100,000 on June 15 would generally need to begin collecting by October 1.
Physical presence in Colorado, such as an office or employee working from a Colorado home office, can also create sales tax obligations regardless of the economic nexus threshold.
What happens if a SaaS company fails to register?
This is an important risk for software companies that have never collected Colorado sales tax.
Colorado makes sellers responsible for applicable state and state-administered local sales taxes on transactions occurring after the required collection start date, even if the seller never charged those taxes to customers.
That means a company could end up paying the uncollected sales tax from its own funds, potentially with penalties and interest.
For SaaS companies with significant Colorado revenue, checking the 2026 sales figures before January 2027 is particularly important.
04What about implementation, support, and maintenance fees?
Many SaaS companies charge separately for implementation, onboarding, technical support, or ongoing maintenance.
Colorado generally includes associated service charges in the taxable purchase price unless the services are both separately stated and separable from the taxable software sale.
For example, an optional implementation service that a customer can decline and that is separately invoiced may be treated differently from mandatory onboarding included in the software subscription price.
Simply creating a separate invoice line does not automatically make a service nontaxable.
Maintenance agreements follow similar principles. Separately stated, optional maintenance services are generally not taxable, while mandatory maintenance included with taxable software is generally part of the taxable purchase price.
The distinction between taxable software and nontaxable services can also require examining the primary purpose of a transaction, particularly when software and services are inseparable.
Software companies offering bundled subscriptions, onboarding, implementation, and support should review how these charges are structured and documented.
05Will existing SaaS subscriptions become taxable in 2027?
Companies with annual subscriptions and multiyear customer contracts should pay particular attention to the transition.
House Bill 26-1223 applies the software tax changes to sales, storage, use, and consumption occurring on or after January 1, 2027.
However, applying these rules to specific prepaid subscriptions, existing licenses, and contracts extending across the effective date may require further guidance.
Colorado's Department of Revenue has started developing regulations to implement the legislation.
Companies should not assume that signing a contract or collecting an annual subscription payment during 2026 automatically protects the entire subscription period from 2027 sales tax.
It is worth reviewing contracts that extend beyond December 31, 2026, especially agreements with automatic renewals or fixed pricing that does not separately address sales tax.
06Colorado local sales taxes create additional complexity
Colorado's statewide sales tax rate is 2.9%, but the actual rate charged to customers may be higher depending on their location.
Cities, counties, and special districts can impose additional sales taxes.
Some Colorado home-rule municipalities administer their own sales taxes and have their own rules for software.
The Colorado Department of Revenue's published guidance applies to state and state-administered local sales taxes. It does not automatically govern taxes collected independently by home-rule cities.
As a result, a software company's obligations may vary depending on where its customers are located within Colorado.
Companies selling throughout the state should evaluate applicable local tax requirements rather than applying a single statewide rate to every transaction.
07What SaaS companies should review before January 1, 2027
For software companies with Colorado customers, there are several practical steps to take before the new rules begin.
- Check Colorado sales for 2026. Determine whether the company already exceeds the $100,000 economic nexus threshold or has physical presence creating collection obligations.
- Review customer contracts. Identify standard subscriptions, individually negotiated licenses, and custom software arrangements that may qualify for exemptions.
- Evaluate bundled services and invoices. Determine whether implementation, maintenance, and other service fees are separately stated and genuinely optional or separable.
- Prepare billing systems. Confirm that applicable Colorado state and local sales taxes can be calculated and collected beginning in 2027.
- Review existing subscription agreements. Identify prepaid, annual, and multiyear contracts that extend beyond the effective date and monitor further guidance on their treatment.
The most immediate concern is for SaaS companies whose Colorado sales already exceed $100,000.
Those companies may have a January 1, 2027 collection obligation even if they have never collected Colorado sales tax before.
And because Colorado can hold sellers responsible for taxes they fail to collect, discovering the obligation months later could become expensive.
Official Colorado sources
- Colorado Department of Revenue: Computer Software Sales and Use Tax
- Colorado General Assembly: House Bill 26-1223
- Colorado Department of Revenue: Sales Tax Guide
This article is general information, not tax or legal advice. The rules are fact-specific, change over time, and depend on details unique to your company. Talk to us about how they apply to your situation.