I replied I. Your other post. The burden is on him to qualify. I believe he would be Category F. Categories are from an earlier post by ksand24.
Category A: UK citizen's employment income (or US citizen's income as well if they are in the UK with permission to work)
The UK citizen must have been with the UK company, earning at least £18,600 salary for AT LEAST 6 months.
Category B: UK citizen's employment income (or US citizen's income as well if they are in the UK with permission to work)
The UK citizen is currently earning £18,600 but has not been with his UK company/not earning £18,600 for 6 months yet (or has a variable income) AND he has also earned £18,600 in total in the last 12 months.
Category C: Non-employment income
Either the UK or the US citizen (or both) have non-employment income of at least £18,600 per year. For example, interest from stocks/shares/dividends, rental income from property you own, child maintenance from a former partner, academic stipend etc.
Category D: Cash Savings
If neither of you has any income, you will need £62,500 in savings, that have been in your account for 6 months or more, in order to qualify for the visa. Or if you don't quite meet the income requirement, you can combine it with savings, but the first £16,000 of savings don't count and then you need 2.5 times the difference between the income and £18,600.
Category E: Pension Income
If you or your husband (or both) have pension income of £18,600 per year, you can qualify for the visa.
Category F and G: Self-employment income over last financial year (F) or last 2 financial years (G)
The UK citizen's self employment income of £18,600 over the last 1 or 2 financial years