The following changes are implemented in this version of Instant Interest effective January 1, 2021:

• Florida changed from 9.00% to 7.00% for both underpayments and overpayments.
• Georgia changed from 7.75% to 6.25% for both underpayments and overpayments.
• Iowa changed from 7.00% to 6.00% for both underpayments and overpayments.
• Louisiana changed from 8.75% to 6.50% for underpayments and from 5.75% to 3.50% for overpayments.
• Maine changed from 7.00% to 5.00% for both underpayments and overpayments.
• Michigan changed from 5.63% to 4.25% for both underpayments and overpayments.
• Minnesota changed from 5.00% to 3.00% for both underpayments and overpayments.
• Missouri changed from 5.00% to 3.00% for underpayments and from 1.80% to 1.20% for overpayments.
• Montana changed from 8.00% to 5.00% for both underpayments and overpayments (based on email from Montana Department of Revenue).
• Nebraska changed from 5.00% to 3.00% for both underpayments and overpayments.
• Ohio changed from 5.00% to 3.00% for both underpayments and overpayments.
• Oregon changed from 6.00% to 4.00% for both underpayments and overpayments.
• Pennsylvania changed from 5.00% to 3.00% for underpayments and from 3.00% to 1.00% for overpayments.
• Texas changed from 5.75% to 4.25% for underpayments and from 2.181% to 0.551% for overpayments.
• Vermont changed from 7.50% to 4.00% for underpayments and from 5.50% to 4.00% for overpayments.
• West Virginia changed from 9.25% to 7.75% for underpayments and from 7.75% to 6.25% for overpayments.

The following changes were implemented in prior versions effective January 1, 2021:

• Colorado changed from 9.00% to 6.00% for both underpayments and overpayments.
• Idaho changed from 4.00% to 2.00% for both underpayments and overpayments.
• Kansas changed from 6.00% to 4.00% for both underpayments and overpayments.
• Kentucky changed from 7.00% to 5.00% for underpayments and from 3.00% to 1.00% for overpayments.
• New Hampshire changed from 7.00% to 5.00% for underpayments and from 4.00% to 2.00% for overpayments.