I don't know what visa you are on, but - if you have an SRRV you can import all your personal effects duty free in the first 6 months after issue. ( I brought in a 20ft container - but not cars/motorbikes ). The SRRV requires a deposit in the PRA escrow account, depending on your circumstances, but you can get that back if you then purchase / lease property in the PH. For more detailed info visit the PRA website. I should add that I had no problems at all with the importation (handled by the local agents Goetz in Manila) and nothing was missing on arrival.