The time horizon, risk tolerance and the general combination are important factors to consider when trying to project growth. And even if you could manage it, you'll also want to confirm that you're eligible to fund both an IRA and a 401 (k) without having to go underground to a Roth IRA, which you can check by consulting Morningstar's IRA calculator. The idea that a Roth IRA is just an instrument for your investments doesn't mean that all Roth IRAs are created the same way. With so many options for funding IRAs and the likelihood of earning high returns, it's no surprise that more than 30% of households contribute to a traditional IRA or a Roth IRA.
While long-term savings in a Roth IRA may result in better after-tax returns, a traditional IRA can be an excellent alternative if you qualify for a tax deduction. How fast an IRA grows depends directly on annual contributions and underlying investments. The main difference between the two types of IRAs is whether you want to fund your IRA with pre-tax or after-tax dollars. Basically, an IRA usually grows over time and undergoes capitalization, allowing investors to reinvest dividends in their IRA to help generate even more dividends in the future.
In this way, Roth IRAs are the opposite of traditional tax-deferred or 401 (k) IRAs; with those accounts, you'll have to pay taxes when you withdraw the funds. Stocks are a popular choice for IRAs because the profits made are essentially additional contributions to the IRA.