Roth IRAs are a great way to save on your taxes, because the income and gains within a Roth IRA are generally not subject to tax even when you make withdrawals from your account in retirement. Yet if you’re looking at doing rollovers in order to get money into a Roth IRA, then it’s important to understand the tax consequences that can result. In particular, although some types of Roth IRA rollovers are tax-free, other transfers of money into a Roth IRA can require you to pay tax.