How can I extend my Non-O marriage visa for one year in Thailand?

To extend your Non-O single entry marriage visa for one year, visit the immigration office to obtain the necessary documentation. You can apply for the extension within 45 days of your current visa expiration. To qualify, you must meet financial requirements, which include having 400,000 baht in a Thai bank account for two months prior to application, or providing a notarized affidavit from your consulate verifying a monthly income of at least 40,000 baht. Alternatively, if you are employed in Thailand, you can submit three months of pay receipts and tax statements showing an income of 40,000 baht a month.