Colorado residents who filed a state income tax return are receiving money back from the state under its Taxpayer’s Bill of Rights, known as TABOR. The refund, officially labeled the “state sales tax refund” by the Colorado Department of Revenue, returns excess state revenue to full-year residents. But the requirement to file a return or a separate application to claim the money raises a pointed question: how many eligible Coloradans are being left out simply because they never filed?
Why the filing requirement shapes who gets paid
Colorado’s constitution mandates that any state revenue collected above the TABOR cap must be returned to taxpayers. The mechanism for doing so has changed over the years, and the current version routes the refund through the individual income tax return, specifically the DR 0104 form. Residents who do not owe state income tax, including retirees, low-wage workers, and others whose income falls below the filing threshold, must still submit that return or file a TABOR-related rebate form to collect their share of the surplus.
That structure acts as a participation filter. In years when Colorado sent automatic checks or used other delivery methods, the refund reached residents without requiring them to take any action. Under the current approach, a resident who qualifies based on full-year residency but does not file gets nothing. The state has not published aggregate data showing how many eligible residents failed to claim the refund this cycle, leaving the scale of missed payments unclear.
SB24-228 and the statutory rules driving distribution
The legislative framework behind the current refund cycle traces to SB24-228, which established or adjusted TABOR refund mechanisms for specified fiscal years. That bill set the sales-and-use-tax refund structure and included an income-tax-rate reduction trigger, giving lawmakers a dual tool for returning surplus dollars. The nonpartisan Legislative Council Staff has documented how these statutory mechanisms have evolved over time, noting that the sales tax refund via the income tax return is the latest in a long line of distribution methods the state has tried since TABOR took effect.
Once a resident files the DR 0104 and claims the refund, the Department of Revenue processes the payment through either direct deposit or a paper check. Processing timelines vary, and the department has acknowledged that fraud-prevention measures can add delays. Residents can track the status of their payment through the department’s online refund tool. The practical effect is straightforward: filing is the gate, and the state opens it only after a completed return arrives.
Gaps in data and the residents still waiting
Several questions remain unanswered by the primary sources governing this refund cycle. Neither the Department of Revenue nor the Legislative Council Staff has released current-cycle numbers showing total dollars distributed, the number of returns that triggered a TABOR refund, or a breakdown by income bracket. The fiscal note attached to SB24-228 does not specify the per-filer refund amount for the active cycle, and no public data shows how many applications were denied due to residency verification failures.
The absence of participation-rate statistics makes it difficult to measure whether the filing requirement is producing meaningfully lower uptake than prior automatic-rebate years. Legislative Council Staff materials provide historical context on past mechanisms but supply no current-cycle forecast updates or comparative participation figures. Without that data, the hypothesis that the DR 0104 requirement suppresses refund participation remains just that – a hypothesis.
What is clear is that the state’s own guidance assumes residents will take the initiative to claim the money. The Department of Revenue’s overview of current refund procedures explains that full-year residents must either file a Colorado income tax return or, if they are not required to file, submit a separate rebate application to receive their share. That guidance reinforces the central role of paperwork in unlocking a benefit that, in theory, belongs to all qualifying residents regardless of income.
Lessons from earlier TABOR refund methods
Colorado’s experience with TABOR refunds did not begin with the current income-tax-based model. Over the years, lawmakers have experimented with a range of approaches, from flat “dividend-style” payments to tiered credits tied to income or other tax liabilities. The Department of Revenue’s archive of prior refund implementations shows that methods have included temporary rate cuts, property-tax relief, and direct checks, depending on the size of the surplus and the policy priorities of the moment.
Those earlier cycles underscore how much design choices matter for who ultimately receives TABOR dollars. Automatic checks minimize friction but can be costly to administer. Rate reductions flow primarily to those with taxable income. Credits claimed on a return, like the current state sales tax refund, tend to favor residents who are already engaged with the tax system and may leave out low-income households that are not required to file.
Policymakers and advocates now face a familiar trade-off. Keeping the refund inside the income tax system simplifies administration and ties payments to verified information, but it risks excluding people who do not see themselves as “taxpayers” because they owe no income tax. Shifting back toward automatic, stand-alone payments could broaden participation but would require new infrastructure and appropriations to reach eligible residents who are not on the tax rolls.
For now, the state’s message is consistent: if you were a full-year Colorado resident in the relevant tax year, the only way to ensure you receive your TABOR refund is to file the DR 0104 or the designated rebate application. Until officials release detailed participation data, the question of how many Coloradans never clear that filing hurdle – and how much money remains unclaimed as a result – will remain unanswered.
