I have a 1099R and I do not understand what the amount in box 9b is used for?

[xcpe@myfairpoint]

The 1099 R is for regular monthly distributions from a qualified pension plan, what is box 9b used for?

[fanfare]

Enter any amount there to TurboTax and it will take the appropriate action, if applicable.

That's what you're paying for.

xcpe@myfairpoint 

[Critter-3 · Accepted solution]

Box 9b. Total Employee Contributions

You are not required to enter the total employee contributions or designated Roth contributions in box 9b.

However, because this information may be helpful to the recipient, you may choose to report them.

If you choose to report the total employee contributions or designated Roth contributions, do not include any amounts recovered tax free in prior years. For a total distribution, report the total employee contributions or designated Roth contributions in box 5 rather than in box 9b.

[fanfare]

When a distribution from a Roth occurs, your  contributions come into play.

See Form 8606.