We use Nest for pensions. QB seems to calculate too small a contribution, and Nest will not accept them. Anyone know why?

These calculations depend on how the pension was setup, roysmiles.

Right now, Nest only accepts before tax calculation, so you’ll need to make sure that all earnings are included in the calculation. Excluding some of the employees, earnings may result into a net pay arrangement. Pension is lower when it’s deducted to the net income compared when it's calculated before taxes.

 You might want to check this article for the steps of setting us pension: Workplace pensions in QuickBooks. 

Stay around if you need anything else.