[The contribution limits for Individual Retirement Accounts (IRAs) in the United States are determined by the Internal Revenue Service (IRS). For traditional and Roth IRAs, the annual contribution limit remains $6,000 for individuals under the age of 50, with an additional catch-up contribution of $1,000 allowed for those aged 50 and over. These limits may be subject to adjustment based on various factors, including inflation and changes in tax laws. It is advisable to consult the official IRS guidelines or a financial advisor to stay updated on the most recent contribution limits and regulations.]