Description: Returning personal and corporate income tax estimated payment amounts to four equal payments, beginning in tax year 2024, would shift about 8 percent of personal income tax estimated payments and 13 percent of corporation estimated payments from 2023‑24 to 2024‑25. Returning to the historical payment schedule would have little net effect on revenue in 2024‑25. Specifically, while the change would shift roughly $5 billion from 2023‑24 to 2024‑25, the change also would have the effect of shifting a similar amount from 2024‑25 to 2025‑26. As a result, the net impact on 2024‑25 and later years would minimal.