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What is the name of the bank letter required for a marriage visa extension in Thailand?

Thai marriage visaVisa extensionBank statementBank letterKasikorn BankImmigration requirementsFinancial proof for visa
Nov 16, 2025
2 days ago
Damien *****
ORIGINAL POSTER
hi

i had an bank account with kasikorn bank and i need the bank letter to prove i had 400,000 thb for extend 1 year marriage visa.

can i know what is the bank letter call or anybody got example picture of the bank letter ?

thanks
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TLDR : Answer Summary
To prove the availability of 400,000 THB for your marriage visa extension in Thailand, you need a banking reference letter from your bank, specifically termed as a 'guarantee letter' by some. This letter verifies your account details, including your account number and balance. Additionally, a 12-month bank statement may be required, and it's important to note that the letter's validity is only seven days.
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Bob **********
The bank knows what you need
2 days ago
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Daniel ******
Better you have 10 Millions!
2 days ago
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Tony *******
Following
2 days ago
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Wannikea *********
In addition the letter is only valid for 7 days so plan accordingly.
2 days ago
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Colin **********
@Wannikea ********
 it depends on the office my want mine on the day so the balance is the same as your bank book
2 days ago
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Colin **********
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John **********
I normally just ask for a letter for immigration. In my bank the staff call it a guarantee letter
2 days ago
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Colin **********
Banking reference letter (for immigration) for your visa extension. It just confirms your the account holder, your account number, your balance, that type of thing, most banks are aware of the form. You should also need a 12 month statement.
2 days ago
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Graham ******
@Colin *********
 An extension based on marriage does not need a 12 moonth history of funds, just 3 months to show the 400k has seasoned for 2 months prior to the application
2 days ago
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Colin **********
@Graham *****
 yes agreed. I was meaning a statement of account activity, my office wants. I thought it was two months seasoning?
2 days ago
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Graham ******
@Colin *********
 I said 2 months ;)
2 days ago
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Graham ******
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Ursula *******************
You can go to the bank and ask them for one and they should know what you want
2 days ago
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Ursula *******************
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Thai Visa Advice and Everything Else
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