Taxable Payroll and Payroll Tax Rates

While the payroll tax rates for Hospital Insurance and OASDI have increased since 1966, the HI rate has risen faster. The HI rate is now almost one-quarter of the OASDI rate. Orszag concludes that removing the current $87,000 cap on taxable payroll under OASDI would raise a substantial share of the long-term OASDI deficit.