Editorial
Off-Plan Payment Schedules in Bangkok: 2026 Guide
By THAI.ESTATE Editorial Team12 min read
Buying off-plan in Bangkok means paying for a property that does not yet exist. Your money leaves your account in stages, tied to construction progress, over a period that typically runs 18 to 48 months. The shape of that schedule - how much you pay, and when - determines how much capital you have at risk at any point during the build.
This guide breaks down the typical staged payment structure you will encounter in Bangkok, explains what each stage means legally, and shows you exactly how to calculate your exposure. It also covers the contract clauses that protect you if things go wrong, and it is honest about the ones that do not.
Quick answer
- A typical Bangkok off-plan payment schedule runs across 4 to 6 stages: reservation deposit, contract signing, two to four construction milestones, and final payment at handover
- The reservation deposit is usually THB 50,000 to THB 200,000 (roughly USD 1,400 to USD 5,600 as of 2026), paid to hold the unit; it is rarely refundable
- The contract signing payment (sometimes called the down payment) is typically 10% to 30% of the purchase price, due within 7 to 30 days of reservation
- Construction milestone payments are usually 5% to 10% per stage, triggered by events such as foundation completion, structural completion per floor, and roof completion
- The final payment at handover is typically 30% to 40% of the total price, which is when foreign buyers who need a mortgage or overseas transfer must have funds ready
- Bangkok off-plan units are commonly priced 10% to 20% below comparable completed resale stock at the time of launch (indicative figures, as of 2026 market estimates) - that gap is the discount you receive for carrying the construction risk
Options and scenarios
The standard instalment schedule
Most Bangkok condominium developers use a schedule that looks like this:
Stage 1 - Reservation deposit: You pay a fixed sum (not a percentage) to remove the unit from sale. This sum is typically THB 50,000 to THB 200,000 depending on unit size and developer. In most contracts, this payment is non-refundable if you do not proceed to signing. If the developer fails to deliver a contract within the agreed period (usually 7 to 14 days), the deposit should be returned in full - check that this is written explicitly into your reservation form.
Stage 2 - Contract signing (down payment): Within 7 to 30 days of reservation, you sign the Sale and Purchase Agreement (SPA) and pay the first major instalment. For mid-range projects this is typically 15% to 20% of the purchase price. For luxury projects it can rise to 25% to 30%. Some developers, particularly those targeting foreign buyers who want lower early exposure, offer a lower signing payment of 10% with higher milestone payments later.
Stage 3 to Stage N - Construction milestone payments: These are payments tied to physical progress on site. Common trigger points are:
- Foundation / pile completion
- Structural frame completed to a specific floor (for example, 50% of floors)
- Structural frame fully completed (topping out)
- Facade and windows installed
- Interior finishing commenced
Each milestone payment is typically 5% to 10% of the total price. A project with four milestone stages at 7.5% each accounts for 30% of the total price paid before handover. You should ask the developer for the specific triggers in writing and confirm that an independent inspection or engineer's certificate is required before each payment is released - in practice, most standard Thai SPAs do not require third-party verification, which is a risk you should flag with your lawyer.
Final stage - Handover payment: At completion transfer you pay the remaining balance, typically 30% to 40% of the total price. This is the single largest payment in most schedules. If you are funding this from overseas, you will need a Foreign Exchange Transaction (FET) certificate - a document issued by a Thai bank confirming that the funds were transferred from abroad in foreign currency and then converted to Thai baht. The FET certificate is essential for your right to repatriate sale proceeds later.
How capital at risk changes over time
Consider a unit priced at THB 5,000,000 with the following schedule:
- Reservation: THB 100,000 (2%)
- Contract signing: THB 750,000 (15%)
- Milestone 1 (foundation): THB 375,000 (7.5%)
- Milestone 2 (frame 50%): THB 375,000 (7.5%)
- Milestone 3 (topping out): THB 375,000 (7.5%)
- Milestone 4 (finishing): THB 375,000 (7.5%)
- Handover: THB 2,650,000 (53%)
After signing, you have 17% (THB 850,000) at risk. After all four milestones, you have 47% (THB 2,350,000) at risk. Only at handover does the final 53% transfer. This structure keeps your largest single payment tied to delivery - which is the best form of natural protection the schedule can offer.
A developer-friendly schedule, by contrast, front-loads payments: 30% at signing, 15% per milestone, only 10% at handover. In that structure, you have 75% of your money paid before the building is finished. That materially increases your exposure if the developer runs into financial difficulty.
The off-plan discount versus the risk you carry
As of 2026 market estimates, a newly launched Bangkok condominium in areas such as Sukhumvit, Ratchada, or Rama 9 is typically priced 10% to 20% below what a comparable completed unit in the same sub-district would cost on the resale market. On a THB 5,000,000 unit, that is a saving of THB 500,000 to THB 1,000,000.
Set against that: if the developer defaults and you cannot recover your staged payments, you could lose the full amount paid to date. Thailand does not operate traditional escrow accounts for property buyers in the way that some other markets do. Your protection is the contract terms, the developer's track record, and the milestone payment structure itself. The discount is real, but so is the risk.
Front-loaded versus back-loaded schedules
Some developers, particularly smaller or financially stretched ones, prefer front-loaded schedules. They need early cash to finance construction. A schedule that collects 60% to 70% of the price before structural completion is a warning sign. A reputable developer with project financing from a bank can afford a back-loaded schedule because the bank carries much of the construction cost. When you compare projects, ask at what point 50% of your total payment is due. If the answer is 'before the building is standing', treat that as a risk factor.
Comparison table
| Payment structure feature | Back-loaded (buyer-friendly) | Balanced (standard Bangkok) | Front-loaded (developer-friendly) |
|---|---|---|---|
| Signing payment | 10% | 15%-20% | 25%-30% |
| Milestone payments (total) | 15%-20% | 25%-35% | 35%-50% |
| Handover payment | 50%-60% | 40%-50% | 10%-20% |
| Buyer capital at risk after milestones | 30%-40% | 45%-55% | 70%-80% |
| Typical developer profile | Listed or bank-financed developer | Mid-size established developer | Smaller or self-financed developer |
| Off-plan discount at launch (indicative, 2026) | 8%-12% | 10%-18% | 12%-22% |
| Risk rating for buyer | Lower | Moderate | Higher |
Risks and mistakes
Not reading the completion guarantee clause
Many Bangkok SPA contracts state a target completion date but do not specify a financial penalty for missing it. The guarantee is often written as 'the developer will endeavour to complete by', which is not a guarantee in any enforceable sense. You should ask your lawyer to confirm whether the contract contains a specific delay penalty clause (for example, a daily or monthly cash payment to the buyer for each day beyond the deadline) and what the maximum delay period is before you have the right to terminate and claim a refund.
Accepting vague refund terms
If you terminate the contract - or if the developer terminates - the refund terms govern what you get back. Some contracts allow the developer to retain all milestone payments if the buyer exits for any reason. Others cap the retention at the reservation deposit. You must read and negotiate this clause before signing. Under Thai civil law (the Civil and Commercial Code), general principles of unjust enrichment apply, but enforcing them through Thai courts is slow and costly. The contract clause is your first line of protection.
Ignoring assignment rights
Assignment means selling your right to purchase the property to a third party before the building is completed. This is a legitimate exit path. However, many Bangkok SPAs restrict or prohibit assignment without the developer's written consent, and some developers charge an assignment fee of 1% to 3% of the purchase price. If you plan to assign (flip the contract before handover), confirm that the SPA permits it and at what cost before you sign. Verbal assurances from a sales agent are not enforceable.
Sending money without a FET certificate
Every overseas transfer you make to purchase Thai property should be accompanied by documentation that creates the FET record at the receiving Thai bank. The FET certificate (Foreign Exchange Transaction form) is the proof you brought money into Thailand as foreign currency. Without it, you may not be able to repatriate your sale proceeds when you later sell. Some buyers send money in multiple small transfers to avoid bank friction, not realising that each transfer needs to be properly documented. Use one clear transfer per payment stage where possible, and confirm with the receiving bank that the purpose of transfer is recorded as 'purchase of condominium'.
Assuming the developer will not default
Developer defaults in Bangkok are not common among large listed developers, but they do occur with smaller, self-financed projects. If a developer defaults mid-build, your position depends on whether the project has a construction loan from a bank. If it does, the bank holds a mortgage over the land and may take over completion or sell the project. Your SPA is a creditor claim, not a secured interest in the property. Recovery can take years through Thai courts. Checking the developer's track record - completed projects, years in operation, public company filings if listed - is not optional due diligence.
Missing the sinking fund and common area fee payments at handover
At handover, you pay not only the final purchase balance but also a sinking fund (a one-time contribution to the building's reserve for major repairs, typically THB 400 to THB 700 per square metre) and advance common area maintenance fees (typically THB 40 to THB 80 per square metre per month, paid 1 to 2 years in advance). Budget for these costs. On a 35 sqm unit, the sinking fund alone could be THB 14,000 to THB 24,500.
FAQ
What is the typical off-plan payment schedule for a Bangkok condominium?
A standard Bangkok off-plan schedule has four to six stages: a reservation deposit (fixed amount, usually THB 50,000 to THB 200,000), a signing payment of 10% to 30%, two to four construction milestone payments of 5% to 10% each, and a final handover payment of 30% to 50%. The exact split varies by developer and project tier.
How much of my money is at risk before the building is finished?
With a standard balanced schedule, you will typically have 45% to 55% of the total purchase price paid before handover. With a front-loaded schedule, this can reach 70% to 80%. The final payment at handover is the single largest payment and is your strongest natural leverage point.
Is there escrow protection for off-plan buyers in Thailand?
No. Thailand does not operate traditional escrow accounts for foreign real estate buyers. Your protection comes from the contract terms, specifically the completion guarantee, delay penalty clause, and refund conditions, combined with careful selection of an established developer with a proven track record.
What happens if the developer misses the completion deadline?
If the contract contains a delay penalty clause, you are entitled to that payment for each month of delay. If there is no penalty clause, your options are limited to negotiation or, as a last resort, contract termination under Thai civil law if the delay is material. Thai courts can enforce termination, but proceedings are slow. Checking the delay terms before signing is essential.
Can I sell my off-plan contract before the building is complete?
Yes, if the SPA permits assignment. Most Bangkok SPAs require the developer's written consent for an assignment and some charge a fee of 1% to 3% of the purchase price. Confirm assignment rights and costs before you sign the original contract if you think you may want this exit option.
What is the off-plan discount compared to completed resale property?
As of 2026 market estimates, Bangkok off-plan units at launch are typically priced 10% to 20% below comparable completed resale units in the same area. That discount compensates you for the construction risk and the 18 to 48 month wait for delivery.
What is a FET certificate and why does it matter?
A Foreign Exchange Transaction (FET) certificate is a document issued by a Thai bank confirming that you transferred funds into Thailand as foreign currency and converted them to Thai baht. Foreign buyers need this document to repatriate sale proceeds when they later sell the property. You should obtain an FET certificate for every payment you make from overseas.
What are sinking fund and common area fees, and when do I pay them?
The sinking fund is a one-time contribution to the building's reserve for major repairs, typically THB 400 to THB 700 per square metre, paid at handover. Common area maintenance fees cover building management and shared utilities, typically THB 40 to THB 80 per square metre per month, often collected 1 to 2 years in advance at handover. Both are in addition to your final purchase balance.
What should I check about the developer before buying off-plan?
Confirm how many projects the developer has completed, whether they are a listed public company (which requires financial disclosure), whether the project has a construction loan from a recognised Thai bank, and whether the project holds an Environmental Impact Assessment (EIA) approval and construction permit. Your lawyer can verify these documents before you commit.
How do I negotiate a better payment schedule?
You can request a lower signing payment, fewer or smaller milestone payments, and a larger final payment at handover. Developers with strong sales pipelines have less flexibility. Developers with slower sales may accept a back-loaded schedule to secure a committed buyer. Any change to the payment schedule must be written into the SPA - verbal agreements with sales staff are not enforceable.
Planning a property purchase in Thailand? Send us your requirements - the THAI.ESTATE team will reply with specific options and a safety checklist for your case.