Tax implications of shifting asset allocations in Roth IRA

[grenzbegriff]

Hi,
Sometimes I want to adjust/rebalance my fund holdings.  But if I do this in my taxable account I end up having to figure out what capital gains I want to pay tax on this year etc. 

I assume since Roth IRA gains are not taxed, that if I were to shift allocations within the Roth IRA, it wouldn't make my taxes more complicated.  Is this correct, or am I missing something?

[shuffler]

Correct.
Same goes for sales within a traditional IRA, or a 401k, etc.

[shuffler]

But it may be worth mentioning that there are reasons to hold various investments in one type of account vs. others, due to the tax treatment.

https://www.bogleheads.org/wiki/Tax-efficient_fund_placement

[grenzbegriff]

Thank you shuffler that's helpful.