I apologize in advance for the long reply :/
So, it's used more as a supplemental income than anything else? Ie, $150k in the Roth IRA would allow you to withdrawal $6k annually, needing the other $24k from taxable accounts.
So, new question. Is it even worth it to invest in the 401k? I understand if I take $100 and put it into the 401k, I end up getting $85 of that back since I'll be in the 15% tax bracket when I go to take the funds out. And if I take $100 now out of my paycheck, I get $75 of that immediately, since I'm in a 25% tax bracket, and I can invest that in index funds. But ultimately, that $75 becomes $63.75 once I withdraw my return, so I'm looking at a pretty big tax difference there (let me know if I'm misunderstanding how this works. I'm also in Washington state, so no state income tax here).
However, would it make sense to get that account up to $150k and then to stop investing, which would stop the major growth of the compounding interest snowball at that point just for the tax break, or would I make more money taking that $150k (or $112.5k after taxes) and put that in index funds so I can just constantly focus on that and grow it?
Just doing some quick calculation, I'd probably be looking at this (My 401k has averaged 7%, but I'm going with 4% to account for inflation on returns and 5% for Index Fund Investments):
Year 1: 401k Balance: $18k. Index Fund Balance: $32k.
Year 2: 401k Balance: $36,720. Index Fund Balance: $65,600.
Year 3: 401k Balance: $56,188. Index Fund Balance: $100,880.
Year 4: 401k Balance: $76,435. Index Fund Balance: $137,924
Year 5: 401k Balance: $97,492. Index Fund Balance: $176,820
Year 6: 401k Balance: $119,392. Index Fund Balance: $217,661
Year 7: 401k Balance: $140,168. Index Fund Balance: $260,544
Year 8: 401k Balance: $163,775. Index Fund Balance: $305,571
Year 9: 401k Balance: $188,326. Index Fund Balance: $352,850
Year 10: 401k Balance: $213,859. Index Fund Balance: $402,492
Year 11: 401k Balance: $240,413. Index Fund Balance: $454,617
Net: $695,030 or $27,801 SWR.
BUT, what if I totally ignored 401k investments and just went with Index funds. Then it would look like this:
Year 1 Index Fund Balance: $50k
Year 2 Index Fund Balance: $102.5k
Year 3 Index Fund Balance: $157,625
Year 4 Index Fund Balance: $215,506
Year 5 Index Fund Balance: $276,281
Year 6 Index Fund Balance: $340,095
Year 7 Index Fund Balance: $407,100
Year 8 Index Fund Balance: $477,455
Year 9 Index Fund Balance: $551,328
Year 10 Index Fund Balance: $628,894
Year 11 Index Fund Balance: $710,339
Net Total: $710,339
So, what am I missing here?