I found this nifty calculator regarding Roth conversions up on Fido's site:
https://calcsuite.fidelity.com/rothconveval/app/launchPage.htmI am also using TurboTax's Taxcaster (
https://turbotax.intuit.com/tax-tools/calculators/taxcaster/) to estimate AGI and "in play" taxable events.
So this is my situation anyway:
You're not allowed to do a Roth conversion out of the inherited IRA, so I could take a distribution, then use the funds to make an actual Roth contribution if I was trying to shuttle what money I could back into a tax sheltered account ($5,500/year per me and spouse). BUT I'd still be unable to do this if I didn't have actual earned income for the year (which after this year, we won't - I'm FIREd as of 2015 and the husband just stopped working in April 2016). So sort of crappy for me that this path isn't an option, but I'm not planning on earning a paycheck again if I can help it. ;)
I could start doing Roth conversions on my personal rollover IRA, but it's about half the size of my inherited IRA, and I do agree with seattlecyclone's assessment that the inherited IRA might need more attention since it is required to take distributions now, and is rather large.
So I'm left with looking at taking inherited IRA distributions as a possible main source of living expenses, in addition to my taxable account's dividends (since they're going to consider them in my AGI anyway might as well use them) and avoiding the need for any long term cap gains from my taxable.
I can pull 20k from my inherited IRA without it triggering any taxes whatsoever it looks like (married filing jointly, will be in the 10-15% bracket depending), but our goal expense range is ~35K/year, so I bump that up to 25K, and I owe a minimum of just under $500 for federal taxes, and flesh out the rest of our living expenses using the dividends from my taxable account (additional 10k). Pulling around $25K out of the inherited IRA means I've satisfied the RMD, and reduced the growth enough so that it might just hold steady instead of continuing to grow, but my advancing age will keep pushing the RMD up incrementally each year and still may mean higher taxes in the not too distant future.
The only issue for the present is keeping the AGI lower than $45K so we still keep our subsidy for our silver level healthcare, but there will still be taxes owed even at that income level, and the bill will eventually grow as I age up even if the inherited IRA amount remains constant.
Seems like a catch 22 situation. Granted, a great problem to have... "you have too much money to avoid paying taxes - either a smaller bit now and each year until end of life, or nothing now and a big tax hit that kicks in later in life."
Must think about all of this and do more reading. But absolutely would love any further insight from any that care to contribute and hopefully my inept ramblings might help you out a bit. :)
And have to say if this hasn't been mentioned lately - you and seattlecyclone are both awesome and thank you so much for all your help all over this forum!