Medicare Tax Limit 2024 For Investment Income Limits 2024. In 2024, only the first $168,600 of your earnings are subject to the social security tax. Those numbers are based on your income on your 2022 tax return.

You pay higher medicare part b and part d premiums if your income exceeds certain thresholds. For 2024, beneficiaries whose 2022 income exceeded $103,000 (individual return) or $206,000 (joint return) will pay a total premium amount ranging from $244.60.