They are a retirement plan administrator.

If you received a 1099R:  Go to  Federal> Wages and Income>Retirement Plans and Social Security>IRA  401 k) Pension Plan Withdrawals to enter your 1099R.

How do you know the taxable amount if the taxable amount not determined is CHECKED and IRA/SEP/SIMPLE is unchecked?

Also, State Street Retiree Services for USPBGC is "Pension Benefit Guaranty Corporation", so they only step after your company fails to fund pensions, so the amount given is far less than the amount promised. Typically pennies on the dollar.

That being said, how does one figure out what part of income it taxed?

It's calculated by the amount you contributed and your age. 

IRS General Rule and Simplified Method

If this is a failed pension plan that was picked up by The Pension Benefit Guaranty Corporation and I lost 90% of the value promised by my now bankrupted employer, how do I factor the amount I contributed?  If I'm only receiving 10 cents on the dollar promised, how to do factor taxable amount?  Or do I plan it safe and assume its all taxable and give Uncle Sam 3 cents of the 10 cents?

Box 5  of your form 1099-R should list the amount you contributed to the plan. If not, then you would have to calculate that by considering how much you contributed per pay period and how may pay periods you contributed.

1099 duplicate

It is a retirement plan administrator. 

No I did not.

@Ifrodri1 If this information was automatically carried over from your 2018 tax return and you don't have a 2019 1099-R form from State Street Retiree Services, delete the information. 

1. Open (continue) your return if you don't already have it open.
2. Inside TurboTax, search for 1099-R and select the Jump to link in the search results.
3. This will take you to the Your 1099-R Entries screen.
4. Select Delete next to the unwanted 1099-R and then answer Yes on the following screen.

Related Information:

• Where do I enter my 1099-R?

Source: TurboTax FAQ

I have not received my 1999-R.