A.B.O.
Accumulated Benefit Obligation. Although if you can work out what the benefit is, you are a better man than me.
A.C.H.
Automated Clearing House. Cheques and other transactions need to be cleared, i.e. the actual cash transferred from one account to another. These organisations provide this service in the background, for a fee.
A.C.R.S.
Accelerated cost recovery system. Recover those costs as quick as you can!
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