Text by Tricky Vandenberg - May 2011
Maps added - June 2012
The city state of Ayutthaya in time, grew to become an important trade player in south-east Asia. Trade was vigilantly controlled by the
Ayutthayan Court. Customs houses were established in the cardinal directions around the city along the important waterways with a double function:
control of persons and goods, and most important for the court, collect taxes. There were four main customs posts called the "
Royal Customs Posts
of the Four Directions

The northern tax station was situated near Ban Bang Luang in the turn of Ban Maen and on the Pho Sam Ton waterway, in fact the old Lopburi
River. It stood behind Wat Na  Phra That. The latter temple could not be traced back by the author. Wat Na Phra That would have been a reliquary
temple as its name suggests, but this kind of temple was always built within the city walls. There are as thus strong doubts about its denomination. A
contender could be
Wat Tha Yak, which was situated on the northern junction point of the old Lopburi River and a khlong lat (short cut) called
Khlong Bang Khuat. The latter canal had been dug through the oxbow of the old Lopburi River, to straighten the waterway. Wat Tha Yak is seated
on the Pho Sam Ton waterway, at a stone's throw from present Ban Maen (Maen Village) and just south of Wat Dao Khanong. [1]

The eastern tax station was situated in the area of Ban Khao Mao. This station must probably have been situated on the junction of present Khlong
Hantra and Khlong Khao Mao in the immediate vicinity of
Wat Krasang. [1]

The southern tax station was the most important and largest customs house as it controlled all the incoming and the outgoing sea vessels. It was
located near Wat Protsat at Bang Tanaosi in present Khanon Luang sub-district of Bang Pa-In, south of Ko Rian. [1] The custom station was called
by the French the "Tabanque" and is indicated on Bellin's map as thus. (1)
Finally, the western tax station was situated on the Maha Phram Canal at Ban Pak Khu (Ban Mai sub-district). It controlled the navigation coming
from and going to the Chao Phraya River (at present the Noi River), which at that time ran a few kilometers west of the city. The tax station was
situated south of Wat Lat Bua Khao and north of
Wat Khanon. [1]

Each toll house had two officers and twenty serfs (2) who worked in shifts of 15 days and were then rotated. At the customs house there were
horses and fast boats to send urgent dispatches to the capital in case of incidents. Boats were checked for prohibited items and weapons as
prescribed by law. Guard boats were making inspections up and down the river, while at night rafts with torches were anchored mid-stream to allow
guards to inspect the night traffic. [3] At the toll houses, import and export duties were collected from ships going to and leaving the capital.

Along the route from the mouth of the Chao Phraya River until Ayutthaya there were guard-vessels and strict vigilance. The ship captains needed to
disembark and register their names and all their goods and armament at a checkpoint manned by a mandarin at the mouth of the river. After the
registration a passport was obtained to proceed to Ayutthaya. Denton, one of the English factors, recorded that "
when going first to the capital,
they learned that the crews of two Japanese junks, then in the river, had traded by force, having entered the city walls without a license.
The result was that eight of their number were killed in one day, whereas if they had first procured the necessary Tarra or license, all
would have been well.
" [4]

For all ships trading with foreign countries the government levied taxes according to the width of the ship, every time the ship entered and left a port
of Siam. The duty collected by the government was according to the width at the gunnels (3) and calculated per Wa (4). The duty was levied on all
ships whether they belonged to the Siamese, the Chinese, the Chams, the Indians, or the Europeans; but the rate could differ depending the
nationality of the vessel. Favoured nations paid a tax of 12 Baht per Wa, while the rest was taxed at 20 Baht per Wa. [5] Import duty was also
levied on the merchandise of incoming vessels. On ships from friendly countries such as China, tax was collected at a rate of 2 in 12; other foreign
merchants paid at a rate of 2 in 9. It was estimated that the state collected 800 gold pieces a year at these customs checkpoints and 3,000 gold
pieces a year from galleon taxes towards the end of the Ayutthaya period. Anyone importing goods into the Kingdom would also expect the customs
officials to take a rake-off of part of the merchandise.

Some of the custom houses are mentioned in the Royal Chronicles of Ayutthaya. After the rainy season in 1563, Burma started a campaign against
Ayutthaya (the White Elephant War). The King of Hongsawadi, Bayin Naung, arrived in March 1564 and erected his royal stockade at Kum Dong.
The battle lingered on and King Chakkraphat (r. 1548-1569) had the Narai Sanghan Cannon taken on board a junk and hauled up by way of Pom
Village. A ground force to protect both banks was prepared and ascended to the
Pak Khu Customs House. The canon was fired and the
cannonball fell inside the stockade near the pavilion of the King of Hongsawadi. The later ordered the site abandoned and went to establish his royal
stockade on the Phutthalao Plain. [6]

In 1568, the Burmese set out again against Ayutthaya, arriving in January 1569 in the vicinity of the capital. The Burmese construct a number of
military stockades  in a circle around the city. The main army set up its stockade at
Wat Pho Phuak Township, on the Pak Khu tax station rice-
fields. Finally Ayutthaya fell to the Burmese. [7]

In 1586, the King of Hongsawadi invested Siam again. He arrived at Ayutthaya on Thursday, the second day of the waxing moon of the month of
January and entrenched his army in the vicinity of the
Pak Khu customs house.  Nanthasu was sent to take up positions in the vicinity of the Lang
Village customs hous
e on the eastern bank of the river with an army of five thousand men and four hundred kacang laokha boats. [8]

After having set up an army camp in the vicinity of
Wat Chong Lom, Prince Naresuan and his brother Prince Ekathotsarot loaded the Phra Maha
Maruttayurat gun onto a junk on the eighth day of the waxing moon of the month of July 1586  and taken up to fire on the King of Hongsawadi’s
stockade at the
Pak Khu customs house. The King of Hongsawadi, seeing that the Siamese were able to reach the stockade with their fire,
withdrew his army and encamped at Pa Mok Yai. [9]

The customs house figures also in the Siamese epic story
Khun Chang Khun Phaen: "People catching sight of them broke into laughter. ‘Those
bald elephants go very well together!’ They shouted at others to come and look. Khun Chang hid his face and looked away. They passed
Don Fak customs post beside Pak Khu. Lots of people come to look at the throng of elephants and horses. They made for the plain
towards Talan"
. [10]
(The "Tabanque ou Douane"on a French map)

(1) Simon de La Loubère wrote regarding the customs house at the mouth of the Chao Phraya River: "The King’s Ambassadors arrived thus
within two Leagues of Siam, at a place which the French called the Tabanque; and they waited there eight or ten days for the time of
their entrance into the Metropolis. Tabanque in Siamese signifies the Custom House: and because the Officer’s House, which stands
at the Mouth of the River, is of Bambou like all the rest, the French gave the name of Tabanque to all the Bambou houses where they
lodged, from the name of the Officers House, which they had seen first of all."
(2) Serfs or Phrai were neither slave nor free, but commoners which served a master periodically with unpaid labour. [2]
(3) Gunnel or gunwale is a nautical term - the top of the side of a boat or the topmost plank of a wooden vessel. It was called as thus because guns
were mounted on it.
(4) Traditional Thai unit of length equal to 2 meters.


[1] อธิบายแผนที่พระนครศรีอยุธยากับคำวินิจฉัยของพระยาโบราฌราชาธานินท์ ฉบับชำระครั้งที่๒ และ ภูมิสถนกรุงศรีอยุธยา
(2007) - Explanation of the map of the Capital of Ayutthaya with a ruling of Phraya Boran Rachathanin - Revised 2nd edition and Geography of the
Ayutthaya Kingdom - Ton Chabab print office - Nonthaburi (2007) - page 89.
[2] Discovering Ayutthaya - Charnvit Kasetsiri & Michael Wright (2007) - page 256.
[3] Khun Chang Khun Phaen - Chapter 42 - Soi Fa and Simala undergo ordeal by fire - Chris Baker & Pasuk Phongpaichit.
[4] Ref: English Intercourse with Siam in the 17th century - John Anderson (1890) - page 54.
[5] Our Wars with the Burmese - Prince Damrong Rajanubhab (re-edited 2001) - White Lotus, Bangkok - page 246.
[6] The Royal Chronicles of Ayutthaya - Richard D. Cushman (2006) - page 35 / Source: Phan Canthanumat, British Museum,
Reverend Phonnarat, Phra Cakkraphatdiphong & Royal Autograph.
[7] Ibid - page 47.
[8] Ibid - page 114.
[9] Ibid - page 117.
[10] Khun Chang Khun Phaen - Chapter 20 - Khun Chang accuses Khun Phaen of rebellion - Chris Baker & Pasuk Phongpaichit.
[11] A New Historical Relation of the Kingdom of Siam - de La Loubère - (White Lotus, 1986) - VI. The Functions of Governor and Judge in the
Metropolis - page 88.