It's a bit of a ball ache but very possible. Have a look on the .gov website.
In your letter stating you'll support here, be quite explicit in detail. For my girlfriend's visit, we stated exactly how much money we estimate she would be sponsored with, even by saying how much money each day she would be given. We said £100 a day. It's just worth saying it, even though we didn't spend close to that each day. Use extensive evidence of relationship, my girlfriend and I had nearly 2 years of photographs together that helped. State why you want her to come. In her letter, state why she wants to come. In our case, it was to meet my family and go to my best friend wedding, as well as see London.
You'll have to include a lot of your financial details if you're going to be sponsoring her.
Theres a whole lot more and it is a ball ache, but we did it. And she doesn't have a job "on paper" just a small online business she runs through her Facebook and Instagram selling handmade doll accessories.
Agree with much if what you have to say, but I'd just like to add my girlfriend got her visa without having a job "on paper". She has a small online business selling hand made stuff on Instagram, and she used screenshots to evidence that as well as mentioned her customer base is almost exclusively South East Asia. And that was enough regarding her work! Which I was very nervous about. Because it isn't a job on paper. Just a thing she does.
For us it was basically a series of pictures of us over the last couple of years. And you could see from my weight gain that there was some time between the first and the last 😂😂
Girlfriends finally woke up so I can double check what I said previously;
When we applied for her visa to the UK, she had only 15k THB in her bank account, and she got the visa. What I think was most important was detailing in the sponsor letter exactly how much we expected to sponsor her for, even estimating how much money a day would be given to her for her expenditure, and of course the sponsor bank statements. As well as adequate evidence of relationship.
I dont think your girlfriend needs 500k in the bank. It might help, but she doesn't need it.
Contrary to what others have said here, my girlfriend came with me to the UK a few months ago we didn't need to put any amount into her bank account.
The most important IMO was the UK sponsor bank account, and in the letter detailing how much money per day she is expected to spend and that the UK sponsor is happy to cover those costs, as well as sufficient evidence of relationship.
Perhaps we got lucky, but she doesn't even have a job "on paper". We just provided all the evidence required as well as any additional evidence we thought necessary.
I'll ask her what I may have forgot when she wakes up.