Looking for a calculator that will let me run PLSO vs. no PLSO with pension

[UnlimitedOne]

Hi all -

This is my first post although I've been reading here since December 2015. 

We are down to the last year before retiring and just last week realized - or maybe paid attention to the fact after listening to a talk on TRS -  that we are able to take a partial lump sum option (PLSO) with the pension from TRS in Texas.

I have been using the Personal Capital retirement planner for years but this PLSO is throwing me for a loop as I try to figure out how we will best be served in taking or not taking the PLSO.

The issue is this:  When I plug in the lump sum the planner automatically taxes it as current income and not as I want it to, which is a rollover into our tIRA.   

Can anyone make a recommendation for a calculator that will enable me to do this? Or suggest a workaround on Personal Capital?

Thanks!

[MDM]

Not familiar with the details of your plan.

What calculation(s) are you looking to see?  Anything similar to what the chart over cell N100 on the 'Misc. calcs' tab of the case study spreadsheet shows (if you can use Excel)?

[UnlimitedOne]

@MDM Thank you for pointing me to that spreadsheet. I was not aware that there were additional sheets past Form 8606. I'll play around with that.