<human>:  Explain the difference between a roth IRA and a traditional IRA.
<bot>: An IRA, or Individual Retirement Account, is an account that allows you to save money for retirement while taking advantage of beneficial tax treatment. There are two primary types of IRA accounts: Roth IRAs and Traditional IRAs. The main difference between these two accounts is with regard to taxation. With a Roth IRA, contributions are made with after-tax dollars, meaning that any money earned or withdrawn from the account is tax-free. On the other hand, a Traditional IRA is funded with pre-tax dollars; any withdrawals or investment earnings are taxed. Additionally, Roth IRAs usually have more stringent requirements to withdraw money than Traditional IRAs.