Updates
Updates include calculation and rate changes to reflect current tax law resulting from inflation adjustments, legislative changes, and review of supported authorities. Effective dates indicate when the changes enter into force. Updates are effective January 1 unless stated otherwise.
Amounts are given in USD. Amounts are annual unless stated otherwise.
potential overstatement of tax costs.
2023 - United States
Indiana
Updated the rates for five local tax authorities, effective October 1, 2023.
2024 - United States
Income Tax
Increased the business mileage rate by $0.015 to $0.67. The deductible portion for qualified moves to nonconforming states, decreased by $0.01 to $0.21.
Social Security
Increased the railroad retirement tier II wage ceiling by $6,300 to $125,100.
Alaska
Increased the maximum unemployment insurance contribution by $8 to $248, due to a rate decrease of 0.01% to 0.5% and a wage ceiling increase of $2,600 to $49,700.
Arkansas
Increased the standard deduction for all filing status. The deduction increased by $70 to $2,340 for single employees.
Georgia
Corrected statute calculations with single filing status to no longer fail.
Hawaii
Increased the disability insurance wage ceiling by $2,928 to $71,489.
Indiana
Decreased the statute and supplemental tax rates by 0.1% to 3.05%.
Maryland
Updated the rates for three local tax authorities.
Montana
Made the following changes:
Decreased the supplemental tax rate by 0.1% to 5.9%.
Changed the tax base from the Federal Adjusted Gross Income to the Federal Taxable Income.
Decreased the number of tax brackets from seven to two. The 5.9% rate applies to income over USD 20,500 for single employees.
Ohio
Updated the rates for five local tax authorities.
Rhode Island
Increased the disability insurance contribution by $120 to $1,044, due to a rate increase of 0.1% to 1.2% and a wage ceiling increase of $3,000 to $87,000.
South Carolina
Decreased the supplemental and top statute tax rates by 0.1% to 6.4%.