Two 5-year Rule concerning Roth IRA：
Roth IRA最大的优势在于本金（供款部分）取出时完全免税。至于投资收益（Earnings）能否免税取出，则取决于第一个五年规则：您的Roth IRA账户开户时间必须满五年。即使您已超过59岁半，此规则依然有效。而第二个五年规则则**专门针对Roth Conversion（转户）**的资金，它设立的目的是防止提早惩罚性取款。好消息是，一旦您达到59岁半，这个针对Conversion的五年规则便不再需要考虑。
你该做什么：早点开一个Roth IRA 账号，即使存入或转入10块钱都可以，争取早日满足第一个5-year rule。
Rule #1: The Roth Account Rule (Still Applies!)
The crucial point? Reaching age 59 and a half does NOT make this 5-year waiting period disappear. If you opened your first Roth IRA at age 58, you’d still need to wait until you’re 63 to take out earnings tax-free.
Rule #2: The Roth Conversion Rule (No Longer Applies After 59.5!)
Each Roth conversion (moving pre-tax money from a Traditional IRA or 401(k) to a Roth IRA) has its own individual 5-year clock. This rule is designed to prevent people from avoiding the 10% early withdrawal penalty by immediately converting and then withdrawing.
However, once you hit age 59 and a half, this 5-year waiting period for a Roth conversion is essentially waived. If you converted funds at age 57, you no longer have to wait until age 62 to access that converted amount penalty-free; you can access it as soon as you turn 59 and a half!