Subject: no longer in a 401K
We retired last year, not yet reaching age 60. So for part of the year we had a qualified retirement plan (401K), and for part of the year we did not. How do IRA contributions work in this situation in terms of deductibility/non-deductibility? Since we had a 401K part of the year, are any contributions to IRAs non-deductible? Is it prorated based on how many months we worked last year? Any idea?

Rolled the 401Ks into IRAs. This year now that we have no earned income (salary), we should probably start converting to ROTH. We do have to pay attention to ordinary income or our healthcare subsidy will evaporate. But that's another topic.