On March 6th, 2018, the IRS released Rev. Proc. 2018-18, addressing a variety of changes to tax rates and inflation-adjusted thresholds in accordance with the Tax Cuts and Jobs Act passed late in 2017. Under the new tax legislation, the methodology for determining adjustments to limits for things such as contributions to health flexible spending accounts (FSAs) and health savings accounts (HSAs) is tied to a "chained CPI," probably resulting in slower upward adjustments over time. Although the IRS guidance does not affect health FSA contribution limits for 2018, HSA contribution limits for family coverage were reduced by $50.00 for 2018.