DTV Family Visa 2026: Moving to Thailand with Kids
DTV3 dependent rules, the unmarried partner trap, international school tuition by tier, and the real monthly delta from solo to family of four.
April 13, 2026
The visa is the easy part. Moving to Thailand as a couple costs roughly 40% more than moving solo, and adding school-age kids in international school triples or quadruples the budget before you have rented an apartment. The DTV3 dependent stamp itself is procedural. The real planning is school selection, apostilled paperwork, and a housing market where a 2 to 3 bedroom condo in central Bangkok is three times the price of a Nimman studio.
Key Takeaways
- ✓DTV3 dependents (legal spouse, children under 20) get the same 5 year stamp as the primary, but each pays the full visa fee separately (~10,000 THB / £300 / $400)
- ✓Unmarried partners are not recognized as DTV3 dependents. Workaround: both apply independently, or the non-primary applies on an METV
- ✓International school tuition runs 150,000 to 1,000,000 THB per year per child. School choice, not visa, is the largest cost in the family budget
- ✓A family of four in central Bangkok needs $4,500 to $7,000 per month all-in. In Chiang Mai, $2,800 to $4,200
- ✓Apostilled marriage and birth certificates are required. Thailand's Hague Apostille accession is expected late 2026, so plan for legalization via the embassy chain until then
This is general information based on profiles similar to yours. Not legal or immigration advice for your specific situation.
DTV3 dependent mechanics
DTV3 is the dependent category. Legal spouse and unmarried children under 20 get the same 5 year multiple entry visa with 180 day stays as the primary, according to the Royal Thai Embassy London and Washington DC DTV pages.
Each dependent files separately on thaievisa.go.th and pays the full fee individually (~10,000 THB / £300 from London / $400 from US posts). No family bundle. A family of four pays four full fees: ~£1,200 / $1,600 before anything else. The primary has to be approved first; dependents then submit using the primary's reference number, their own passport, photo, proof of relationship, and the same financial evidence. Children under 20 do not need their own 500,000 THB; the primary's funds cover the unit.
Documents per dependent: passport biodata page (valid 6+ months), recent photo, apostilled marriage certificate (spouse) or birth certificate (each child), primary's approved DTV reference number, same residence proof as the primary.
The dependent's stamp dates match the primary's. If the primary enters on 1 September with 180 days, the dependent entering together gets the same window. Each is responsible for their own re-entries afterwards.
Thailand is expected to accede to the Hague Apostille Convention in late 2026 (Cabinet approved December 2025). Until full implementation, your marriage and birth certificates need consular legalization, not just an apostille. From the UK, that means FCDO apostille then the Royal Thai Embassy in London. From the US, state-level apostille then the Royal Thai Embassy in DC or your regional post. Allow 6 to 10 weeks for the full chain. Verify the current process at the Thai MFA legalization page.
For the full DTV requirements, processing times, and rejection patterns, see our DTV visa guide. The dependent track inherits all the same financial scrutiny applied to the primary.
The unmarried partner trap
DTV3 recognizes only legal spouses. Cohabitation, civil partnerships, registered domestic partnerships, and common-law marriages from any US state are not accepted as the basis for a dependent visa, according to forum reports on ASEANNOW and embassy guidance summarized by visa advisory services. The Royal Thai Embassy London and US posts apply this consistently. UK civil partnerships under the Civil Partnership Act 2004 do not move the needle.
Two workable paths:
Option 1: both apply independently as primary. If your partner has their own remote income and 500,000 THB in their own name, they apply for DTV1 separately. Two applications, two fees, two 5 year visas. Pooled funds do not work: the embassy reviews per-applicant statements, and a balance held in one partner's name cannot count for the other.
Option 2: primary on DTV, partner on METV. If the partner does not qualify in their own right, the METV bridges. 6 months validity, 60 day stays extendable by 30, financial bar around 200,000 THB, £150 from London. The partner does rolling visa runs to KL or Vientiane every 60 to 90 days, then renews from a third country every 6 months. Not a long term answer, but it buys time to either marry or season the partner's own DTV savings.
The clean fix is marriage. The friction of legalizing the marriage certificate is less than running a partner on rolling METVs for 5 years.
Multiple posters report that unmarried partners were declined as DTV3 even with shared mortgages, joint accounts, and 10+ years of cohabitation evidence. The embassy position is binary: legal spouse or no dependent stamp.
ASEANNOW forum threads on DTV3 dependents, 2025 to 2026
School-age children: the cost driver
This is the line item that reshapes the family budget. International school in Bangkok ranges from 150,000 THB per year at the budget end to over 1,000,000 THB at the top end, per child, per year. For two children at a top-tier school, you are paying more in tuition than most remote workers spend on everything else combined.
Decision tree for school tier:
- If household income is $200K+ and you want the strongest university pathway → Premium tier (NIST, Patana, ISB, Harrow).
- If household income is $100K to $200K and you want strong academics with manageable fees → Mid tier (Bangkok Prep, KIS International, St. Andrews).
- If household income is under $100K, kids are under 10, and you are open to homeschool blend or smaller programs → Budget tier.
- If you have time and language patience, plus kids under 10 → Local Thai school. Cheaper, but DTV3 acceptance is inconsistent and curriculum is Thai-medium.
Tuition by tier
| Tier | School | Annual tuition (THB) | Annual tuition (~USD) |
|---|---|---|---|
| Premium | NIST International (Bangkok) | 750,000 to 1,000,000+ | $21,500 to $28,500+ |
| Premium | Bangkok Patana | 600,000 to 950,000 | $17,000 to $27,000 |
| Premium | International School Bangkok (ISB) | 700,000 to 1,000,000 | $20,000 to $28,500 |
| Premium | Harrow Bangkok | 750,000 to 1,000,000+ | $21,500 to $28,500+ |
| Mid | Bangkok Prep | 400,000 to 650,000 | $11,500 to $18,500 |
| Mid | KIS International | 400,000 to 600,000 | $11,500 to $17,000 |
| Mid | St. Andrews International | 450,000 to 700,000 | $13,000 to $20,000 |
| Budget | Smaller international or bilingual programs | 150,000 to 350,000 | $4,300 to $10,000 |
| Local | Thai government school | Effectively free; supplies and uniforms only | Under $500 |
Sources: school admissions pages at nist.ac.th, patana.ac.th, isb.ac.th, harrowschool.ac.th, bangkokprep.ac.th, kis.ac.th, standrews-schools.com. Verify the current academic year tuition at each school's admissions page before budgeting.
Tuition is only part of the bill. Premium schools add one-off application fees (5,000 to 15,000 THB), capital levies or building funds (30,000 to 150,000 THB per child), and annual transport (40,000 to 80,000 THB) if you use the bus. Allow another 15 to 25% on top of headline tuition for the all-in cost.
Application timing
Premium and mid-tier Bangkok schools admit 6 to 12 months ahead of the August intake; NIST, Patana, and ISB have waitlists for popular year groups. For a 2026 to 2027 academic year start, file applications by January 2026 at the latest, assessment in February or March, decision in April or May. Chiang Mai's market is smaller: Prem Tinsulanonda and Lanna International are the two main options at 400,000 to 700,000 THB. Waitlists shorter than Bangkok.
Childcare and preschool
For pre-school age children, full-time nannies in Bangkok run 15,000 to 25,000 THB/month live-out, 10,000 to 18,000 THB live-in. International preschool and Montessori programs run 10,000 to 40,000 THB/month (top end like Bangkok Montessori International or Wells International charges full school fees). Chiang Mai equivalents (Panyaden, Lanna Kindergarten) sit at 8,000 to 25,000 THB.
A useful sanity check: a nanny plus a 3-day-a-week preschool blend in Bangkok costs less than a single child's premium international school tuition by a factor of 5 to 10. The cost cliff happens at primary school age, not earlier.
Family healthcare
The DTV does not include health insurance. Default setup for a family of four: an international family plan for the long term, plus travel medical to bridge the policy gap on day one.
Cigna Global Family is the reference international family plan for full coverage including maternity. A family of four (adults in their 30s, two kids under 10) typically runs $4,000 to $9,000 per year depending on inpatient and outpatient options, per the Cigna Global plan builder. Allianz Care Family is the closest competitor with a stronger pediatric network in Bangkok. Quote both. SafetyWing covers children up to age 10 on a parent's policy at no extra cost, but it is travel medical, not full family cover; use it for the first 6 to 12 months only.
For inpatient care, Bumrungrad International Hospital in Sukhumvit and Samitivej Sukhumvit are the two expat-family defaults in Bangkok. Confirm with school admissions whether your child's vaccination records meet the entry requirement before flying.
Get coverage live from your first day in Thailand. Several families on the ExpatDen forums have reported $3,000 to $8,000 out-of-pocket bills for a child's emergency room visit during the policy gap between landing and a Thai-domiciled policy starting. Travel medical (SafetyWing) for the first 30 days, then port to the long term family plan.
Family housing
A 2 to 3 bedroom condo or house, not a studio. The market splits sharply by city and neighborhood.
| Area | Configuration | Monthly rent (THB) |
|---|---|---|
| Bangkok central (Sukhumvit Soi 39/49, Sathorn, Ari) | 2-3BR condo with pool/gym | 35,000 to 70,000 |
| Bangkok outer (On Nut, Bang Chak, Phra Khanong) | 2-3BR condo with pool/gym | 22,000 to 40,000 |
| Chiang Mai (Nimman, Hang Dong, Mae Rim) | 2-3BR house in moo baan compound | 20,000 to 40,000 |
Sukhumvit Soi 39/49 (Phrom Phong, Thong Lor) sit near Bangkok Patana school buses and international supermarkets; Sathorn is closer to NIST and Harrow; Ari is the leafy middle ground. In Chiang Mai, Hang Dong and Mae Rim are the family-favorite suburbs near Prem Tinsulanonda and Lanna International School. Compounds (moo baan) offer pool, gym, and security at a price point single-tower condos cannot match, but most sit 15 to 30 minutes from central neighborhoods. Use DDProperty and Hipflat for live listings.
Burning season is the one calendar item families plan around. AQI in Chiang Mai regularly exceeds 200 from late February to April, and families with kids under 10 commonly relocate to Bangkok or the islands for the worst weeks. See our Chiang Mai vs Bangkok guide for the full trade-off picture.
The monthly cost delta
This is the table that resets expectations. All figures are comfortable, not bare-minimum.
Bangkok
| Category | Solo | Couple | Family of four (2 kids, 1 in primary school) |
|---|---|---|---|
| Housing | 18,000 to 35,000 THB | 25,000 to 45,000 THB | 40,000 to 70,000 THB |
| Food and groceries | 12,000 to 20,000 THB | 18,000 to 30,000 THB | 30,000 to 55,000 THB |
| Transport (Grab, BTS, occasional taxi) | 3,000 to 6,000 THB | 5,000 to 10,000 THB | 8,000 to 15,000 THB |
| Coworking / internet | 4,500 to 10,000 THB | 5,500 to 10,500 THB | 6,000 to 11,000 THB |
| Health insurance | $80 to $150 | $200 to $400 | $400 to $750 |
| School (one child, mid tier) | n/a | n/a | 35,000 to 55,000 THB |
| Miscellaneous | 8,000 to 15,000 THB | 12,000 to 20,000 THB | 18,000 to 30,000 THB |
| Monthly total (USD all-in) | $1,800 to $2,500 | $2,500 to $3,800 | $4,500 to $7,000 |
Chiang Mai
| Category | Solo | Couple | Family of four (2 kids, 1 in primary school) |
|---|---|---|---|
| Housing | 10,000 to 18,000 THB | 15,000 to 25,000 THB | 22,000 to 40,000 THB |
| Food and groceries | 8,000 to 14,000 THB | 12,000 to 20,000 THB | 20,000 to 35,000 THB |
| Transport (scooter, Grab) | 2,500 to 5,000 THB | 4,000 to 8,000 THB | 6,000 to 12,000 THB |
| Coworking / internet | 3,000 to 5,000 THB | 3,500 to 5,500 THB | 4,000 to 6,000 THB |
| Health insurance | $70 to $130 | $180 to $370 | $370 to $700 |
| School (one child, mid tier) | n/a | n/a | 30,000 to 45,000 THB |
| Miscellaneous | 5,000 to 10,000 THB | 8,000 to 14,000 THB | 12,000 to 22,000 THB |
| Monthly total (USD all-in) | $1,200 to $1,800 | $1,800 to $2,700 | $2,800 to $4,200 |
Premium-tier schools push the family total higher: two children at NIST or Patana adds roughly 110,000 to 160,000 THB ($3,200 to $4,600) per month on top of the school-included family figures above, taking a comfortable Bangkok family budget to $7,500 to $11,500 per month. Families on premium tier in Bangkok are typically dual-income households earning $250K+ combined.
Pre-departure family checklist
Beyond the standard remote worker list (see moving from the UK and moving from the US), families have four moving parts that drive the timeline.
Apostille the documents now. Marriage certificate, each child's birth certificate, custody paperwork if applicable. 6 to 10 weeks lead time on the consular legalization chain. Everything else depends on this.
School admissions, 6+ months ahead. Premium and mid-tier Bangkok schools admit on a cycle that closes in spring for the August intake. If your move is timed for the new academic year, you are already late by April or May.
Pet relocation, 6 months ahead. Cats and dogs need a microchip, rabies titer test (drawn 30+ days after vaccination, valid 12 months), and import permit. Air-cargo or in-cabin booking is competitive: book 2 to 3 months ahead. Use Jet-A-Pet or Petraveller from the UK or US.
Partner's tax status. A non-working spouse retains home-country filing obligations if they keep UK ordinary residence or US citizenship. Check Form P85 (UK) and continuing US filing obligations. For the Thai side, see our Thailand digital nomad tax guide for the 180 day residency rule that applies to every adult in the household.
Start the apostille and school applications this month. Both have lead times in months, not weeks. Tuition and accommodation are the budget you validate before anyone files a DTV application; the visa paperwork is a 2 week task once those numbers are real.
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Frequently asked questions
- Can my unmarried partner get a DTV dependent visa?
- No. DTV3 dependent status is restricted to legal spouses and unmarried children under 20. Civil partnerships, registered domestic partnerships, and common-law marriages are not recognized. Workarounds: both partners apply independently as primary DTV1 applicants (each needs 500,000 THB in savings and qualifying income), or the partner applies on a Multiple Entry Tourist Visa (METV) and does rolling 60 day entries.
- How much does each DTV dependent cost?
- Each dependent pays the full DTV fee separately: approximately 10,000 THB, equivalent to £300 from London or $400 from US posts. A family of four pays four full fees, around £1,200 or $1,600 in visa fees alone.
- What international school tuition should I budget per child?
- Premium tier schools (NIST, Patana, ISB, Harrow Bangkok) charge 600,000 to 1,000,000+ THB per year. Mid tier (Bangkok Prep, KIS, St. Andrews) charges 400,000 to 700,000 THB. Budget tier programs run 150,000 to 350,000 THB. Add 15 to 25% for application fees, capital levies, and transport.
- Do I need apostilled marriage and birth certificates for the DTV dependent application?
- Yes. Until Thailand's full implementation of the Hague Apostille Convention (expected late 2026), documents need consular legalization: domestic apostille followed by Royal Thai Embassy legalization in your home country. Allow 6 to 10 weeks for the full chain.
- What's the realistic monthly budget for a family of four in Bangkok?
- $4,500 to $7,000 per month with one child in mid-tier international school. Premium-tier schools push this to $7,500 to $11,500 per month for two children. Chiang Mai equivalents are roughly 35 to 40% cheaper across the board: $2,800 to $4,200 for a family of four.
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