Missouri's Special Districts: $32 Billion in 2025 Taxable Sales, and What the Arnold TDD's 87% Problem Looks Like in Context

Missouri's Department of Revenue published Calendar Year 2025 taxable sales data by special district in April 2026 — the most complete public dataset of its kind available for any state. The report covers 507 community improvement districts and 214 transportation development districts, with quarterly breakdowns for each. For the first time, the Missouri special district ecosystem can be analyzed as a portfolio rather than as individual cases.

The aggregate numbers:

483 CIDs with reportable data generated $14.595 billion in CY2025 taxable sales. 204 TDDs with reportable data generated $17.529 billion. Combined: $32.123 billion in annual taxable sales across 687 Missouri special districts.

That number does not represent what districts collected. It represents the commercial activity on which district assessments, sales tax capture, and TIF calculations are based. The actual revenue collected by districts is a function of the assessment rate applied to their relevant base — which varies significantly by district type, rate, and statutory authority.

Reading the data as a property owner

For a commercial property owner inside a Missouri special district, the statewide data has two practical uses.

First, it allows benchmark comparison. If a property owner is evaluating whether their district's assessment rate is producing reasonable service delivery, they can compare their district's taxable sales volume to similar districts in the dataset and estimate whether the assessment revenue is proportionate to the services being delivered.

Second, it documents trajectory. The quarterly breakdown reveals whether the district's taxable sales base is growing, stable, or declining. A TIF district in which the assessed value increment is growing will capture more revenue this year than last. A TIF district in which the commercial base is declining will capture less. The data is one proxy for that trajectory.

The Arnold TDD as a worked example

The Arnold Retail Corridor TDD (TDD00116) generated $377,984,590 in taxable sales in CY2025. Quarterly: $88.9M / $98.4M / $94.4M / $96.2M.

At the district's 1-cent sales tax rate, the TDD generated approximately $3.78 million in revenue in 2025. The state auditor found that approximately $3.3 million of that revenue went to city bond debt service rather than to transportation improvements — the TDD's statutory purpose. Approximately 87% of the TDD's estimated annual revenue went somewhere other than where the statute says it was supposed to go.

The value of the Missouri DOR data is that it allows that calculation to be made with specificity. Before this dataset was accessible in this form, the Arnold audit finding was documented in qualitative terms — the auditor said revenue was diverted; the city said the bond obligations required it. The data allows the arithmetic. The arithmetic changes the character of the accountability story.

The statewide context

The Arnold TDD ranks ninth among all Missouri TDDs by 2025 taxable sales volume — a significant district, not a small one. The eight TDDs above it include the two Kansas City Streetcar TDDs ($5.13B combined), the Chesterfield Valley TDD ($1.008B), the 39th Street TDD ($1.005B), and four others.

The Arnold TDD's performance at $377.9 million annually is above the Missouri TDD median. The audit finding is not about a marginal district operating at the edges of its capacity. It is about a district with meaningful commercial activity directing the majority of its revenue away from its statutory purpose.

What the data does not show

The Missouri DOR data is taxable sales, not assessed value, and not district revenue. For property owners trying to understand their district's TIF capture, the conversion from taxable sales to TIF revenue requires the district's specific tax rate and TIF increment calculation, which vary by district and are not in the DOR dataset.

The dataset also does not capture districts where fewer than six businesses reported (those are suppressed for confidentiality), which tends to affect smaller and newer districts disproportionately.

What the SIC code breakdown reveals beyond the top-line total

The Missouri DOR dataset includes a companion file — DI60IL02 — that breaks taxable sales by Standard Industrial Classification code for each district. For practitioners who want to understand what categories of commerce are driving each district's performance, this is the most operationally useful data layer in the dataset.

The SIC breakdown reveals the commercial composition of each district's taxable sales — how much of the activity is food service and drinking establishments versus retail versus professional services versus entertainment. For a downtown CID whose taxable sales total is $150 million, the SIC breakdown shows whether that $150 million is distributed across diverse commercial activity (a healthy corridor indicator) or concentrated in a small number of high-volume categories (a concentration risk indicator). A downtown CID generating $150 million where 65% comes from food and beverage and 35% from a mix of retail and services is a commercially diverse corridor with multiple revenue anchors. A CID generating the same $150 million where 85% comes from a single entertainment anchor is a CID with significant concentration risk — the loss of that anchor would collapse the TIF revenue.

For district managers who have access to the DOR dataset: the SIC breakdown by district is more useful for operational planning than the top-line taxable sales total, because it tells you which categories are your corridor's commercial anchors, which categories are growing or declining as a share of total sales, and which categories are underrepresented relative to comparable corridors. The corridor's commercial composition is the leading indicator of its future performance; the top-line total is the lagging indicator.

The CID and TDD frameworks compared as investment vehicles

The Missouri data allows the CID and TDD frameworks to be compared as investment vehicles in terms of the commercial scale they're typically deployed in. Missouri's 483 CIDs with reportable data generated $14.6 billion in 2025, averaging approximately $30 million per district. Missouri's 204 TDDs generated $17.5 billion, averaging approximately $86 million per district. TDDs are on average three times larger by commercial activity than CIDs.

The scale difference reflects the statutory design of each instrument. TDDs are primarily designed to fund transportation infrastructure tied to significant commercial development — the kind of large-scale retail corridors, interchange development nodes, and transit corridors that generate high per-district commercial activity because the infrastructure investment is designed to produce that scale. CIDs are primarily designed for smaller-scale commercial area management — the kind of local business district or neighborhood commercial corridor where the district's services are funded by the aggregate activity of many smaller tenants.

Key Takeaways

• Missouri DOR CY2025: 483 CIDs generated $14.6B taxable sales; 204 TDDs generated $17.5B. Combined: $32.1B across 687 districts.
• Arnold TDD: $377.9M in 2025 taxable sales (9th among Missouri TDDs). State auditor found 87% of revenue diverted to city bonds.
• Missouri DOR data allows benchmark comparison and trajectory analysis for property owners evaluating district performance.
• SIC code breakdown (DI60IL02) reveals commercial composition — concentration risk vs. diversification indicator.
• TDDs average $86M per district; CIDs average $30M. Scale difference reflects statutory design.

Sources

Missouri DOR DI60T17, CY2025. Missouri State Auditor. Prior Plat Street coverage: RW·1·4·2.