Visas can be obtained either at the entry (most likely at the airport) or at any Thai consulate.

90 days only in any 180 day periode.

After the first 30 days have elapsed foreigners are free to take Visa runs to a borther for a further 60 days (30 + 30 days).

These Visas can not be extended.

After the 90 days have elapsed foreigners are free to take Visa runs to a borther for a further 90 days (30 + 30 + 30 days) in any 180 days.

90 Days Visa are issued at any Thai consulate (most likely destination will be Penang in Cambodia).

The Royal Thai consulate general in Penang, Malaysia, has indicated that officers there will now limit applications from foreigners applying to visit Thailand as tourists to just three 60 day visas.
Other Thai consulates and embassies in the region are unlikely to offer more generous visa extensions than Penang.

Allows foreigners aged 50 (+ over) to extend an non-immigrant Visa for up to 12 month from the date of the last entry into Thailand.

It requires either a 800'000 Baht in a Thai Bank or a combination of cash in the bank and proof of pension paid in the home country.

Applicants have to use visa application form TM 7 and have to enclose their passport, a 4 x 6 cm photograph, 1,900 baht fee, proof of income (certificate of bank deposit and bank book savings account, or a fixed account for at least the last three months), and proof of an appropriate amount of money from abroad through the bank in a certain period of time, such as a certificate of transfer from abroad or copy of a banking transfer order.

NEW: Applicants need to have an ATM card and a credit card.

Legal spouses of Thai national require a minimum cash of 400'000 Baht in a Thai Bank. A relationship certificate approval with Thai translation certified by the embassy or consulate must be presented.

Local immigration officers will also visit your home to verify that you really do live toghether as husband and wife.

Invest some of your money in a fixed-term deposit account.

You can get a significant higher interest rate. Ask your bank for the best terms.

As a holder of a Retirement Visa you can apply for a Residence Certificate.

It allows you to get your Thai Driving Licence, to buy a Motorcycle or a Car or to open a Bank Account on your very own name.