Missouri’s Income Tax Debate: The Questions That Will Define the Outcome

Missouri is now at a pivotal moment.

With the passage of HJR 173/174 through the General Assembly, the question of eliminating the state income tax is no longer theoretical—it is headed to voters. That alone makes this one of the most consequential policy discussions our state has faced in decades.

Before opinions harden, it’s worth stepping back and asking a more important question: What has to be true for this to work?

We’ve seen something like this before.

In 2012, Kansas, under Governor Sam Brownback, implemented sweeping income tax reductions with the expectation that economic growth would follow. Instead, revenues declined faster than anticipated, growth lagged expectations, and the policy was ultimately reversed in a bipartisan effort just a few years later.

That experience is not a warning—it’s a reference point.

Missouri’s proposal is structured differently. It includes phased implementation and revenue triggers designed to align tax reductions with economic performance. That’s a meaningful evolution in approach.

But structure alone doesn’t answer the underlying challenge. If income tax represents a significant portion of Missouri’s revenue base, then its reduction or elimination requires a clear, durable replacement strategy—one that holds up not just in theory, but in practice.

And that’s where the conversation needs to sharpen.

The Questions That Matter Now

Rather than framing this as “for” or “against,” Missouri would be better served by focusing on the questions that will ultimately determine success or failure:

1. What is the actual replacement plan—not conceptually, but operationally?

What combination of growth, consumption-based taxes, and structural changes is expected to replace income tax revenue—and over what timeline?

2. How broad is the future tax base—and where are the boundaries?

If the shift moves toward consumption, what is included? What is excluded? And how do those decisions impact key sectors like housing, professional services, and small business?

3. What happens if projected growth underperforms?

Revenue triggers create discipline—but they don’t eliminate risk. What are the predefined responses if growth falls short? Where does the adjustment occur?

4. How do we maintain competitiveness without creating instability?

Tax policy is not just about rates—it’s about predictability. How do we ensure that businesses, developers, and investors can plan with confidence in a changing structure?

5. What is the impact on regional affordability and cost of living?

As revenue sources shift, how do those changes flow through to households—particularly in housing, goods, and services that shape day-to-day affordability?

6. How are core services and infrastructure protected over time?

Economic growth depends on functioning systems—transportation, education, healthcare access. What mechanisms ensure these remain stable through the transition?

7. Is there broad alignment across the sectors that drive our economy?

Business leaders, real estate professionals, healthcare providers, and civic institutions are not separate conversations—they are one system. Does this proposal reflect alignment across that system, or are there unresolved gaps that need to be addressed?

Why This Matters

The Kansas experience reminds us of something simple: Not that reform is risky—but that execution determines outcome. Missouri has the benefit of hindsight, and the opportunity to approach this differently. But success will depend less on the intent of the policy and more on the clarity behind it.

At Progress 64 West, we believe decisions of this magnitude deserve more than quick conclusions. They require informed dialogue, grounded in both opportunity and accountability.

This is one of those moments.

And it’s one where the right questions—asked now—will shape the answers that follow.