Thailand visa extensions: the annual cycle

What an extension of stay actually is

A visa gets you into Thailand. What keeps you here is the permission-to-stay stamp in your passport, and once the original visa's period runs out, that permission is prolonged through an extension of stay granted under the Immigration Act. The distinction matters in practice. An extension is not issued by an embassy; it is granted, year by year, at the immigration office responsible for your registered address, and it is granted on a specific basis: employment, marriage to a Thai national, retirement, education, or supporting a family member. Change the basis, and in most cases you start again.

The extension is stamped into the passport as a new permitted-until date, normally one year forward from the expiry of the current permission. The government fee is ฿1,900, unchanged for many years. Everything else about the process varies with the basis, the office, and the state of your file.

Where and how the process runs

Applications are filed in person at the immigration office covering the district where you live, using form TM7 with photographs, passport copies and the supporting set for your basis. Bangkok residents use the Chaeng Watthana Government Complex; provincial residents use their local office, where practice can differ noticeably in both documentation and temperament. Most offices accept applications within 30 to 45 days of the current permission's expiry, and some now run online queue bookings that fill quickly in high season.

Two habits separate smooth renewals from difficult ones. First, apply early in the window rather than in the final week, so that any missing document can be cured without an overstay risk. Second, bring originals and signed copies of everything, arranged in the order the officer will review them. Immigration officers process hundreds of files; a file that reads cleanly gets decided quickly.

Document sets by basis

Every basis shares a common core: the TM7, photographs to specification, signed copies of the passport's photo page, current visa, latest entry stamp and departure card record, the TM30 receipt, and proof of address. On top of that core sits the evidence particular to the basis, and it is the particular evidence that decides the outcome. Offices also differ in their appetite for extras, some asking for maps to the residence, others for additional photographs, and a family filing at a provincial office should expect requirements a Bangkok filing would not see. The safe method is to prepare to the strictest standard you have encountered and let the officer wave away what is not needed.

Employment (Non-B extension)

The work-based extension is really an audit of your employer. Beyond the TM7 and passport set, the file includes the work permit, the company's registration documents, shareholder list, financial statements, monthly tax and social security filings, your personal income tax records, and photographs of you at the workplace. The company must satisfy the standing ratios: broadly ฿2M in paid-up capital per foreign employee (฿1M where the applicant has a Thai spouse) and four Thai employees per foreigner, with BOI-promoted companies enjoying relaxed treatment through the One Stop Service Center. If the company's filings are late or inconsistent, the extension inherits the problem.

Marriage to a Thai national

The marriage extension requires the marriage certificate and its Thai registration, the spouse's house registration and identity card, and financial evidence of ฿400k held in a Thai bank account in the applicant's name, seasoned before filing, or equivalent monthly income evidenced through embassy letters where the applicant's embassy still issues them. Offices commonly require photographs of the couple at home and may conduct a home visit. It is the most personal of the extension processes and the one where under-consideration periods are near universal.

Retirement

The retirement extension, for applicants aged 50 and over, rests on financial proof: ฿800k in a Thai bank seasoned for two months before the first application and three months at renewal, or monthly income of ฿65k evidenced by an embassy income letter, or a combination reaching ฿800k per year where the office accepts it. A bank letter and updated passbook issued on or near the filing date are expected. The seasoning requirement is the single most common trip-wire: money that arrives late, or dips below the threshold mid-year at offices that check, can void an otherwise routine renewal.

The under-consideration stamp

Not every extension is granted on the day. Marriage cases, first-time applications and files with any irregularity commonly receive an under-consideration stamp: permission to remain for roughly 30 days while the file is reviewed, followed by a return visit at which the full year is granted or further documents requested. This is normal and not a sign of trouble, but it has two practical consequences. Travel during the consideration period needs care, since the pending status complicates re-entry, and the return date is a hard appointment that should not collide with anything else in the diary.

An under-consideration stamp is part of the process, not a rejection. Treat the return visit as fixed, keep the passport available, and avoid international travel in that window unless it is genuinely unavoidable.

The obligations that ride alongside

An annual extension does not stand alone. Three recurring obligations attach to it. The 90-day report notifies immigration of your address every 90 days of continuous stay, filed in person, by post or online when the system cooperates. The TM30 obliges the householder, in practice often you or your landlord, to report your residence, and a missing TM30 surfaces at the worst moments: extension filings, residence certificates, bank paperwork. Finally, the extension itself does not survive departure without a re-entry permit: single ฿1,000, multiple ฿3,800, obtained at immigration or the airport before leaving. Forgetting the re-entry permit cancels the extension the moment you fly out, and rebuilding it means starting the whole basis from a new visa.

• 90-day report: every 90 days of continuous presence, small window either side of the due date.
• TM30 residence notification: filed by the householder, checked at extension time.
• Re-entry permit before any departure: without it the extension dies at the border.
• Bank seasoning: funds in place two to three months before filing, depending on basis and year.

The renewal calendar as household discipline

Seen from a distance, the annual cycle is simple: season the funds, gather the set, file early in the window, complete the consideration visit, take a multiple re-entry permit, and keep the 90-day and TM30 obligations current in between. Seen from inside a busy household with school terms, board schedules and travel, it is a calendar problem, and calendar problems are solved by ownership. Someone must own the dates: when the deposit must land, when the bank letter must be issued, when the queue booking opens, when each family member's extension and permit falls due, and how the travel diary bends around them.

For families we advise, that ownership sits with our office. We maintain the immigration calendar alongside the tax and schooling calendars, prepare each file to the standard the reviewing officer expects, and attend filings so that an under-consideration query is answered the same day rather than the next month. The extension system rewards exactly this kind of quiet, repetitive discipline, and it punishes improvisation. A year is a short time; the window for getting next year right is already open.

This briefing is general information, not legal, tax or investment advice. Thai rules change frequently and individual cases differ. Verify current requirements with the relevant authorities, including the Immigration Bureau, the Board of Investment, the Land Department, the Department of Business Development and the Revenue Department, and take advice on your own facts before acting.