The fiscal note (and ERFC's June forecast, which matches it) projects $2.698 billion in FY2029, $3.732 billion in FY2030, $3.167 billion in FY2031 and $3.297 billion in FY2032; those four years total $12.894 billion. OFM's I-645 fiscal impact statement projects $3.108, $4.432 and $3.892 billion for FY2029-31 ($11.432 billion). ERFC's September 2026 forecast projects $3.503, $5.032 and $4.403 billion for FY2029-31 ($12.938 billion).
| estimate | fiscalYear | grossBillions | valueType |
|---|---|---|---|
| ESSB 6346 fiscal note (Mar 2026) | 2029 | 2.698 | observed |
| ESSB 6346 fiscal note (Mar 2026) | 2030 | 3.732 | observed |
| ESSB 6346 fiscal note (Mar 2026) | 2031 | 3.167 | observed |
| ESSB 6346 fiscal note (Mar 2026) | 2032 | 3.297 | observed |
| ESSB 6346 fiscal note (Mar 2026) | 2033 | 3.439 | observed |
| ESSB 6346 fiscal note (Mar 2026) | 2034 | 3.591 | observed |
| ESSB 6346 fiscal note (Mar 2026) | 2035 | 3.753 | observed |
| ERFC forecast (June 2026) | 2029 | 2.698 | observed |
| ERFC forecast (June 2026) | 2030 | 3.732 | derived |
| ERFC forecast (June 2026) | 2031 | 3.167 | derived |
| OFM fiscal impact statement for I-645 (Jul 2026) | 2029 | 3.108 | observed |
| OFM fiscal impact statement for I-645 (Jul 2026) | 2030 | 4.432 | observed |
| OFM fiscal impact statement for I-645 (Jul 2026) | 2031 | 3.892 | observed |
| ERFC forecast (Sept 2026) | 2029 | 3.503 | observed |
| ERFC forecast (Sept 2026) | 2030 | 5.032 | derived |
| ERFC forecast (Sept 2026) | 2031 | 4.403 | derived |