Pretax 401K, Aftertax 401K, and ROTH 401K

本帖于 2021-08-20 14:37:44 时间, 由版主 柠檬椰子汁 编辑

This applies to 401K, 403B or other ERISA plan. 

Pretax 401K is no tax now, but tax on withdrawal for both contribution and earning.  This is what we usually call 401(k), the limit is 19500.

ROTH 401K is tax contribution now, but no tax on earning when withdrawal

The Pretax/ROTH 401K has a combined limit of 19500.

Aftertax 401K is contribution is taxed now, and its earning is taxed on withdrawal.  It is just like your other after tax savings.  The only advantage I can see is that it is inside a ERISA protected account so usually lawsuit cannot get to it.  

The after-tax 401K contribution limit is ($38,500).  That is ERISA total limit of $58,000 minus Pretax limit of $19, 500.

The contribution part of the after-tax 401K can be converted to a ROTH account.  This is called mega ROTH backdoor.  The earning part of the after-tax 401K can be rolled over to a traditional IRA. 

see https://www.irs.gov/retirement-plans/rollovers-of-after-tax-contributions-in-retirement-plans

Hope this helps. 

所有跟帖: 

after tax 401K最大的好处是mega backdoor Roth, 如果能同时提供in-plan Roth conv -kitfrommars- 给 kitfrommars 发送悄悄话 (0 bytes) () 08/20/2021 postreply 13:31:42

谢谢科普,本以为roth 401k和after-tax 401k是一回事呢。 -yezi-us- 给 yezi-us 发送悄悄话 (0 bytes) () 08/20/2021 postreply 14:11:25

你来问以前我也不太清楚,做了点research,反馈一下。 -柠檬椰子汁- 给 柠檬椰子汁 发送悄悄话 柠檬椰子汁 的博客首页 (0 bytes) () 08/20/2021 postreply 14:38:40

谢谢,今天你们几位让我学到了很多。感谢你们的耐心。 -yezi-us- 给 yezi-us 发送悄悄话 (0 bytes) () 08/20/2021 postreply 18:10:11

谢谢!如果前些年的after tax 401k,在报税时没有填8606表,以后会不会被再次课税? -花飞絮- 给 花飞絮 发送悄悄话 (0 bytes) () 08/20/2021 postreply 15:22:37

你个人的Roth才需要你自己填表 -柠檬椰子汁- 给 柠檬椰子汁 发送悄悄话 柠檬椰子汁 的博客首页 (105 bytes) () 08/20/2021 postreply 17:04:20

谢谢! -花飞絮- 给 花飞絮 发送悄悄话 (0 bytes) () 08/20/2021 postreply 21:07:03

will Roth 401k be tax on the contribution money? -Sam1963- 给 Sam1963 发送悄悄话 (0 bytes) () 08/20/2021 postreply 16:38:16

要的 -柠檬椰子汁- 给 柠檬椰子汁 发送悄悄话 柠檬椰子汁 的博客首页 (0 bytes) () 08/20/2021 postreply 17:01:00

After tax contribution limit不一定是38,500.还要减去公司match的。一共不能超过五万八 -twototango- 给 twototango 发送悄悄话 (0 bytes) () 08/20/2021 postreply 16:57:36

是的,谢谢说明,有时候解释一件事很麻烦,给一个链接很多人也看不懂 -柠檬椰子汁- 给 柠檬椰子汁 发送悄悄话 柠檬椰子汁 的博客首页 (0 bytes) () 08/20/2021 postreply 17:34:43

aftertax 401K 以及之后的Roth conversion有收入的限制吗? -永远正能量- 给 永远正能量 发送悄悄话 (0 bytes) () 08/21/2021 postreply 01:13:01

要是公司没有任何match, 401Ktotal limit $58,000 -睡觉不打呼噜- 给 睡觉不打呼噜 发送悄悄话 (0 bytes) () 11/16/2021 postreply 23:48:18

要是公司没有match的话,那么总的401K(不管pre-tax,还是roth 401K加起来)不是58K而只是19.5K吧,也 -睡觉不打呼噜- 给 睡觉不打呼噜 发送悄悄话 (268 bytes) () 11/16/2021 postreply 23:50:39

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