Social Security COLA Calculator

Social Security COLA Calculation Guide

The Social Security Administration computes annual benefit cost-of-living increases based on third-quarter CPI-W inflation figures.

Formula

New Monthly Benefit = Current Benefit * (1 + COLA Rate / 100)
Monthly Increase = New Benefit - Current Benefit

Frequently Asked Questions

When do annual COLA increases take effect?

COLA increases are officially announced each October and take effect starting with the December benefit payable in January.

Does Medicare Part B reduce the net increase?

Yes. If the standard Medicare Part B monthly premium rises, it is deducted automatically from gross Social Security benefits before disbursement.