Huh, they did say that in the second application response. The only thing is, it's not stated as such anywhere on the website or in the Guidance Notes. I looked everywhere to see if we'd missed that. It only discusses per annum, never that you have to have a minimum amount per month in a 6 month period.
It's definitely in the official documents, because the guidance notes are where I get all of my information from.
The very first point under Category A is:
5.1. Category A: With current employer for 6 months or more – person residing in the UK
5.1.1. Where the applicant‟s partner (and/or the applicant if they are in the UK with permission to work) is in salaried employment at the date of application and has been with the same employer for at least 6 months prior to the date of application, they can count their gross annual salary towards the financial requirement. In doing so they must have been paid throughout the period of 6 months prior to the date of application at a level of gross annual salary which equals or exceeds the level relied upon in the application.
When they say 'throughout the period', that means that their salaried pay must exceed the requirements at all times during the 6-month period. So if their salary is £18,600 per year, they must be paid the equivalent monthly amount of £1,550
throughout the 6-month period.
If any of the payslips is less than £1,550, they use the lowest payslip to calculate the annual salary... so if one of his payslips was £1,500 instead of £1,550, they take that payslip and multiply it by 12 to get the annual salary for the application. In that case, 12 x £1,500 = £18,000... which is less than £18,600 and means that the financial requirement has not been met and the visa should be refused.
This is also stated clearly in the first Case Study of Category A as well:
5.1.7. Case studies – Category A: With current employer for 6 months or more – person residing in the UK
Example (a) In an application for entry clearance the applicant's partner is in salaried employment at the date of application and has been working for the same employer for 7 months prior to the date of application. For the first three months of the 6 months prior to the date of application his gross annual salary was £15,500. Then he was promoted by his employer so that for the next three months (those being the three months immediately prior to the date of application) his gross annual salary was £18,700. The applicant's partner is relying on Category A and so must have earned a level of gross annual salary which equals or exceeds the level relied upon in the 6 months prior to the date of application[/color]. Therefore the figure that can be used towards the requirement will be the lowest level of annual salary received during this 6 month period prior to the date of application which is £15,500.
The couple have no other source of income or savings and so the financial requirement is not met.
In this case, the applicant's partners salary at the end of the 6 months was enough, but because 3 of his payslips were less than £1,550, they were the ones used to calculate his annual salary for the application and so he didn't qualify for the visa... he would have had to wait another 3 months before applying... so he had 6 payslips of £1,550 or more.