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| Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | Sunday | |||
| 1Labour DayLabour Day | 2 | 3 | |||||||
| 4H.M King Maha Vajiralongkorn’s Coronation DayH.M King Maha Vajiralongkorn’s Coronation DayH.M King Maha Vajiralongkorn’s Coronation Day | 5 | 6Visakha Bucha DayVisakha Bucha DayIn Thailand, Buddha's birthday is known as Visakha Bucha Day | 7Withholding Income Tax Return for Apr’19Withholding Income Tax Return for Apr’19The May’20 (Monthly) Withholding Income Tax Return is for revenue generated in Apr'20. (Por. Ngor. Dor. 1,2,3,53,54, Por. Por. 36) | 8 | 9 | 10 | |||
| 11 | 12 | 13 | 14 | 15Monthly VAT and/or SBT Tax Return for Apr’20Monthly VAT and/or SBT Tax Return for Apr’20The May’20 (Monthly) VAT and/or SBT Tax Return is for the tax generated in Apr’20. (Por. Por. 30, Por. Thor. 40) Alternate Date for Withholding Tax Return (E-Filing)Alternate Date for Withholding Tax Return (E-Filing)Alternate date for E-filing the May’20 (Monthly) Withholding Income Tax Return if first deadline missed. No fines or penalties are assessed. (Por. Ngor. Dor. 1,2,3,53,54, Por. Por. 36) | 16 | 17 | |||
| 18 | 19 | 20 | 21Royal Ploughing CeremonyRoyal Ploughing CeremonyThe Royal Ploughing Ceremony is a government holiday in Thailand. | 22 | 23 | 24 | |||
| 25Alternate Date for VAT and/or SBT Tax Return (E-Filing)Alternate Date for VAT and/or SBT Tax Return (E-Filing)Alternate date for E-filing the May’20 (Monthly) VAT and/or SBT Tax Return if the first deadline is missed. No fines or penalties are assessed. (Por. Por. 30, Por. Thor. 40) | 26 | 27 | 28 | 29Annual Corporate Income Tax Return for year 2019Annual Corporate Income Tax Return for year 2019Annual Corporate Income Tax Return for year 2019 (Por. Ngor. Dor. 50,52,55) | 30 | 31 | |||
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