Use the SSA-3643 to compute increases in benefits resulting from a triennial redetermination.
You may use the e2455+, a new tool for calculating amounts payable after workers’ compensation/public disability
benefits (WC/PDB) offset, instead of the paper Form SSA-3643. The e2455+ can propagate
offset rates into OREO (see DI 52165.020).
For more information, see DI 52150.080 – Triennial Redetermination (Redet) of Average Current Earnings (ACE).