Real vs Nominal and Taxes

This has probably been asked a thousand times every single year. But just so that i get certainty on this. I am trying to calculate nominal before tax return from real return, the tax rate and inflation.

Is it:

[Real Return (after tax)+ Inflation ] / 1-T = Nominal Return (before tax) 

or

[Real Return (after tax) /  1-T] + inflation = Nominal Return (before tax)