Visitors with a valid passport may obtain a visa at any Jordanian embassy, consulate, or legation abroad. A visa can also be obtained at Amman’s Queen Alia International Airport or at any other border crossing except King Hussein Bridge and the ferryboat from Egypt. Visas are valid for 2 weeks, but can be extended at any police station. No inoculations are required for entry into Jordan, although preventive shots for hepatitis, polio, tetanus and typhoid are recommended.

The cost of one entry visa for all nationalities is JD 10 (around $14) for all nationalities and for multiple entries it is JD 20 (around $28).
Groups of five persons or more arriving through a designated Jordanian tour operator are exempted from all visa charges.
Effective July 16, departure tax for Jordanians and non Jordanians departing the kingdom from any airport is JD 20.
Certain nationalities require an entry visa to be obtained prior to travel. It is recommended that you check with the Jordanian diplomatic mission in your country prior to travel to ensure that you have all the necessary paperwork for travel.
Arrivals at Aqaba, either through the port, the airport or at the crossing from Israel or Saudi Arabia , are granted a free visa to Jordan . There is no obligation associated with this visa, provided that they leave the country within 1 month of arrival, and that they do not need to 'renew' their visa . 

Those holding an ASEZ visa, and wishing to stay longer than 1 month must extend it at the ASEZA office in Aqaba and not with their local police station as holders of a normal visa would do
Visitors arriving to Jordan at any entry point other than Aqaba, are entitled to a free visa (i.e. arrival tax is exempt). However, they must report this to the authorities and must register with the Aqaba Special Economic Zone Authority (ASEZA) visa office in Aqaba within 48 hours of their arrival in Jordan . Those failing to register are liable to payment of the visa when they leave the Kingdom.

All visitors, without a specific exemption, must pay the exit tax whether holding an ASEZ visa or not, and whenever leaving the country.