requirements for spouse visa

a family member who is British and who is self employed wants to bring in his wife from Nigeria, wanted to ask what documents does he have to show to aid the application ?

I suggest they read the information thoroughly in the following links and return with any specific questions:

https://www.gov.uk/government/publicati ... form-vaf4a

if i am right from what i have read, employed and self employed have to show income of at least £18,600 a year after tax ?
where does the £16,000 savings come into play ?

You only need savings over £16,000 to make up any shortfall in earnings.

Are you employed or self-employed. There are different requirements for proof of income.

Employed = £18,600 before tax The most recent 6 months of pay slips

Self-employed = nett income of £18,600 after deduction of allowable business expenses. i.e the amount on which HMRC have calculated for tax due.
12 months of accounts/self-assessment required.

Thank you casa for your reply