Hi,
The Difference
The question of the differences between the IAS and IFRS has arisen on a number of occasions in accounting circles, and in fact, some would question if there is any difference at all. One of the major differences is that the series of standards in the IAS were published by the International Accounting Standards Committee (IASC) between 1973 and 2001, whereas, the standards for the IFRS were published by the International Accounting Standards Board (IASB), starting from 2001. When the IASB was established in 2001, it was agreed to adopt all IAS standards, and name future standards as IFRS. One major implication worth noting, is that any principles within IFRS that may be contradictory, will definitely supersede those of the IAS. Basically, when contradictory standards are issued, older ones are usually disregarded.
IASs are the old standards. IFRSs are the new standards. Any future standard will essentially be IFRSs and eventually all IASs will be replaced by IFRSs
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Regards
Gustavo