  We present an error band on neutron matter properties at finite temperature
(finite-T) which comprehends uncertainties on the nuclear interaction, the
many-body method convergence, and the thermodynamical consistency of the
approach. This study provides nonperturbative predictions for finite-T neutron
matter employing chiral interactions which are selected on the basis of their
performance in both finite nuclei and infinite matter at zero temperature.
Since proper theoretical uncertainties at finite-T are still generally lacking,
the band provided here represents a first step towards setting first-principles
constraints on thermal aspects of the nuclear matter equation of state.
