date of arrival (x)

months with 30 days= you should leave on (X-1) next month

months with 31 days= you should leave on (X-2) next month

Many foreigners who came to Indonesia using visit visa or visa on arrival found difficulties in calculating the length of their stay permit and ended up being overstay. Foreigners could have maximum of 60 days of visa permit if they got their visa in Indonesian Embassies abroad. Meanwhile, they could also get Visa On Arrival, with 30 days permit, in Indonesian ports of entry — airport or seaport.

Indonesian immigration counts the day of your arrival as the 1st day of the permit. Say that you arrived on December, 1st 2012 and got Visa On Arrival in Soekarno-Hatta International Airport Jakarta. Your Visa will be expired after Desember, 30th 2012 and If you later leave on Desember, 31st 2012 you are already being overstay for one day.

Some countries do count their immigration stay permit start the day after the day of arrival. There is nothing wrong with it, cause every country has authority to set their own immigration policy or system. As for Indonesian, the logic is that on the day of arrival every foreigner has already used their permit. If the calculation of the permit start the day after the day of arrival, that means on the day of arrival those foreigners do not hold any immigration permit. That is why the Indonesian start counting the immigration permit on the day of arrival.

Some common mistakes are usually people wrongly understand 30 days as 1 month. Not every month has the same 30 days, some month has 31 days, 28 or 29 days in case on February. Some Tourists think that they should be leaving one day from the date stamped on their passport. For some months with 30 days, that works fine, but there are also months with 31 days. For Example if you arrived on November 2nd 2012 using Visa On Arrival 30 days, you should leave on December, 1st 2012. November has 30 days. However if you arrived on October, 2nd 2012 (October has 31 days), with Visa on Arrival 30 days, you should leave on  October, 31st 2012, not on November, 1st 2012.

The formula is on the month with 30 days: the date of your arrival minus one. Meanwhile on the months with 31 days: the date of your arrival minus two.

date of arrival (x)

months with 30 days= you should leave on (X-1) next month

months with 31 days= you should leave on (X-2) next month