Got severance, how does it affect benefits? - any advice?

I was offered severance of 16 weeks after being let go as a project coordinator and I am unsure how it affects benefits. Any experience at all would help. I have a mortgage and need to plan. Who should I ask before signing?

I filed on day one anyway and reported the severance honestly. The agency decided what to do about the timing.

Some states only count certain kinds of severance. A local workforce centre could tell me which.