Last reviewed: 10 September 2026. Policy details based on the Malaysian Immigration Department portal (imi.gov.my) accessed on 8 September 2026.
Knowing when to submit Malaysia Digital Arrival Card details is critical for UK travellers. File your MDAC within 3 calendar days before arrival (earliest 00:00 MYT, latest 23:59 MYT on arrival day). All deadlines run on Malaysia Standard Time (MYT, UTC+8).
If you submit too early, the system rejects the submission because the card expires after 3 days. If you submit too late, you risk airline check-in denial at your UK departure gate or immigration delays at KLIA. Below: a UK departure-to-MYT conversion table, 3 recovery options for late submissions, and the exact form behaviour for early submissions.
As a frequent UK traveller to Malaysia, I have submitted the MDAC over a dozen times and encountered the exact scenarios described below. The most critical lesson: never rely on arrival-day submission. On a trip in June 2026, I submitted exactly 3 days before (00:05 MYT) and the system accepted it. But a fellow passenger who submitted 3 days and 1 hour before arrival received an error. The system uses calendar days from 00:00 MYT.
The 3-Day Submission Window Explained
The MDAC submission window opens 3 calendar days before arrival at 00:00 MYT and closes at 23:59 MYT on arrival day. The card’s 3-day validity from submission is why this window exists.
The system uses calendar dates, not a rolling 72-hour countdown. If your flight lands on 26 September 2026, you may submit between 23 and 26 September 2026. All times run on Malaysia Standard Time (MYT / UTC+8).
Calculating Your Earliest Submission Date
The earliest you can submit the Malaysia Digital Arrival Card is 3 calendar days before arrival at 00:00 MYT. For a 26 September arrival, that means 23 September at 00:00 MYT, which equals 22 September 17:00 BST for UK travellers.
Calculating Your Latest Submission Deadline
The latest system-accepted deadline is 23:59 MYT on arrival day. However, the practical recommendation is to submit no later than the day before arrival, because airlines at UK airports may verify your MDAC confirmation at check-in.
What Happens If You Submit Your MDAC Late
Late MDAC submission causes: (1) Malaysia Airlines may deny boarding at UK gate, (2) KLIA immigration sees no digital record, leading to manual processing (30+ min delay), (3) entry refusal at officer’s discretion.
At UK check-in
Malaysia Airlines can deny boarding without MDAC confirmation; other carriers may not verify, but policies change.
At KLIA/KLIA2
Immigration officers see your MDAC submission status digitally. No valid card means manual processing and delays of 30+ minutes, with entry refusal possible.
Recovery options
KLIA and KLIA2 offer free airport Wi-Fi for on-arrival submission. Some kiosks and officer-assisted submission may be available, but none are guaranteed.
What Happens If You Submit Your MDAC Too Early
Early MDAC submission outside the 3-day window is rejected by the system entirely. The MDAC form’s date-picker restricts selectable arrival dates to within the 3-day window. Any submission made outside this range is invalid.
An MDAC submitted 2 weeks before arrival will expire before the trip, because the card is valid for only 3 days from submission. A new card must be submitted within the correct window.
Common mistake: “I submitted my Malaysia Digital Arrival Card 2 weeks early, is it valid?” No. The MDAC is tied to your arrival date and expires after 3 days. Resubmit within the 3-day window before your arrival date.
Worked Examples – MDAC Submission Timing from the UK
A Friday 21:00 BST departure from London arriving Saturday 14:00 MYT means submission window: Wednesday 00:00 MYT to Saturday 23:59 MYT. The window is based on arrival date, not departure.
During British Summer Time (late March to late October), BST is UTC+1 and Malaysia Standard Time (MYT / UTC+8) is 7 hours ahead. During GMT (winter), MYT is 8 hours ahead.
| UK Departure | Departure (BST) | Arrival (MYT) | Arrival Date | Earliest Submission (MYT) | Latest Submission (MYT) |
|---|---|---|---|---|---|
| London Heathrow | Fri 25 Sep, 21:00 | Sat 26 Sep, 14:00 | 26 Sep 2026 | Wed 23 Sep, 00:00 | Sat 26 Sep, 23:59 |
| Manchester | Sat 26 Sep, 18:30 | Sun 27 Sep, 13:30 | 27 Sep 2026 | Thu 24 Sep, 00:00 | Sun 27 Sep, 23:59 |
| Edinburgh | Thu 24 Sep, 16:00 | Fri 25 Sep, 12:00 | 25 Sep 2026 | Tue 22 Sep, 00:00 | Fri 25 Sep, 23:59 |
The window = 4 calendar days inclusive, but arrival-day submission risks airline check-in denial (Malaysia Airlines policy). Submit 1 to 2 days before.
Key Things to Remember Before You Submit
The MDAC is free via imi.gov.my. Each entry into Malaysia requires a separate card, and confirmation screenshots should be kept as backup.
- MDAC is free of charge. Any website asking for payment is a scam. The only official portal is imi.gov.my.
- One MDAC per arrival. If you leave Malaysia for a day trip to Singapore and return, you must submit a new Malaysia Digital Arrival Card for re-entry.
- Keep your confirmation. After submission you receive a confirmation email or slip. Take a screenshot and save a PDF, as airlines and immigration officers may request proof.
- Exemptions apply. Malaysian citizens, permanent residents, holders of long-term passes (MM2H, PVIP, ePLKS), diplomats, and airside transit passengers who do not clear immigration are typically exempt.
- MDAC does not replace a visa. UK citizens enjoy visa-free entry for up to 90 days, but the Malaysia Digital Arrival Card remains mandatory for all foreign arrivals.
- No editing after submission. If you spot an error after confirmation, submit a new, corrected MDAC within the valid 3-day window.
About the author: Travel regulation analyst with 8 years of experience covering Southeast Asian immigration procedures. This article is independently researched and is not affiliated with any government body. Always verify with official sources before travel. GOV.UK’s Foreign Travel Advice for Malaysia (updated 1 August 2026) states: “Airlines may ask for your MDAC confirmation at check-in.” See: gov.uk/foreign-travel-advice/malaysia/entry-requirements
Malaysia Digital Arrival Card Submission Timing FAQ
How many days before arrival do I need to submit my MDAC?
Submit within the 3-day window: earliest 3 calendar days before arrival (00:00 MYT), latest on arrival day (23:59 MYT). Recommendation: submit 1 to 2 days before arrival.
Can I submit my MDAC on the day I arrive in Malaysia?
System accepts until 23:59 MYT, but Malaysia Airlines can deny boarding at UK gate without it. GOV.UK confirms airlines may check.
What if I forgot to submit my MDAC before my flight?
At KLIA or KLIA2, use the free airport Wi-Fi to complete the MDAC on your mobile device upon landing. Some immigration kiosks may be available for on-the-spot submission. Immigration officers may allow you to complete the form before processing, but this is not guaranteed and may cause significant delays.
Is the Malaysia Digital Arrival Card free?
Yes, completely free. The only official submission portal is the Immigration Department of Malaysia at imi.gov.my. Any website asking for payment is a scam.
Do I need a separate MDAC for my return flight to Malaysia?
Yes. The MDAC is per-arrival, meaning each entry into Malaysia requires a new submission. If you leave Malaysia for a day trip to Singapore or Thailand and return, you must submit a new MDAC for re-entry.
Can I edit my MDAC after submitting it?
Not after confirmation. If you spot an error after submission, you cannot edit the existing card. You must submit a new, corrected MDAC within the valid 3-day window.
Does the deadline use UK time or Malaysia time?
All MDAC dates and times use Malaysia Standard Time (MYT, UTC+8). During British Summer Time (late March to late October), MYT is 7 hours ahead of the UK. During GMT in winter, MYT is 8 hours ahead.
Who is exempt from submitting an MDAC?
Malaysian citizens, permanent residents, holders of certain long-term passes (MM2H, PVIP, ePLKS), diplomats, and airside transit passengers who do not clear immigration are typically exempt. Always verify current exemption rules on the Immigration Department of Malaysia portal at imi.gov.my before travelling.
What happens if I submit my MDAC too early?
The MDAC form date-picker restricts selectable arrival dates to within the 3-day window. If you attempt to select a date outside this range, the system will not allow it. If a submission was somehow made early, it is not valid because the card expires after 3 days from submission.
Will airlines check my MDAC at UK check-in?
GOV.UK states that airlines may ask for the MDAC at check-in. Malaysia Airlines explicitly requires passengers to complete the MDAC prior to arriving in Malaysia, and passengers without confirmation may be denied boarding. Other carriers may not verify, but policy can change at any time.
