In the US, IBM also announced a limited period migration assistance trade-in credit on a one-for-one basis for benighted users lumbered with the original RT and who want to upgrade to the less than compatible designated IBM second generation reduced instruction set computer system that will be announced by IBM at a later date. The value of the trade-in credit is based on the date the RT was bought, and is up to 80% of the initial IBM invoice value of the RT bought on or after July 1, 1989, and on or before June 30, 1990; and up to 40% for RTs bought on or after January 1, 1989; the credit is limited to the tag on the new RT.
