Like @carltonroe , I disagree with your interpretation of the instructions associated with reporting Income (the name of the document section from which you quote). Those instructions do seem to specify rounding is optional ("can"). You may forget that some taxpayers fill out paper forms with a pen or pencil, and I can't recall (and I'm old enough to do so) getting my tax form rejected by entering income or any other number precisely. I'll grant you that it's to the benefit of the IRS to accept rounded approximations - even to require software that prepares tax returns to do so in submitted forms, but this terrible "reconciliation" of RMD combinations and summarizations is on a WORKSHEET which is supposed to help me (and Intuit, I assume) to get the reporting of a certain taxable activity - which notably could easily be audited, is too complex, and has as much as a 50% penalty for getting it wrong - exactly correct.
How about this: All numbers in non-filed worksheets should allow entry at full precision and round their output only if it's destined for a field that must be reported as rounded (IRS forms, other worksheets and data fields that work with whole dollars, etc.).
Kudos to Intuit for not continuing to make unrounded input compared to its rounded equivalent an error so we can proceed to file our taxes. I'm also a teeny bit alarmed that this community forum seems to be where technical problems are getting reported, simply by mentioning them. I looked everywhere I could find where one reports a bug, gets an acknowledgement, allows you to track it, gets a resolution (either way). I've fallen in with lots of knowledgable and enthusiastic users here, but who answers for software engineering? On a positive note, I'm piling up lots of "badges"!
I notice that Intuit seems to allow (and keep) precise values in those double-click total detail box gizmos and handles the rounding of those totals where required. If they're clever enough to do that, they could easily fix RMD reconciliation to make some sense and work properly.
