Is it better to under-estimate or over-estimate income?

My spouse got laid off last year, and as part of his severance his workplace covered Cobra for a while, but we're losing that coverage soon. We were hoping he'd be employed again before it ran out, but the job search has been a real struggle, so I'm about to start shopping on the marketplace for new coverage. We've been living off unemployment, savings, and selling some stocks, so our income this year is nothing like it has been in past years (where he made six figures.)

I'm trying to figure out if it's better to over-estimate or under-estimate our income. If the universe shines down on him and he manages to find a job before the end of the year, the estimation could be significantly under. But if I over-estimate and it turns out we would have qualified for subsidies, is there any way to get that back after the fact?

We live in Texas, if that information is relevant!

submitted by /u/somethinglucky07
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