Method and system for automated postage correction of residual mail

The present invention relates to a system and method for processing residual mail to automatically correct the postage therefor. A first class of service that was used to originally process the residual mail and a second class of service to which a postage value originally applied to the residual mail is to be corrected are received. A postage correction table is then generated from a first rate table corresponding to the first class of service and a second rate table corresponding to the second class of service. A postage correction amount for each piece of residual mail is determined based upon the postage correction table. The postage correction table may include a plurality of weight breaks and a plurality of corresponding postage correction rates and/or dimension based charges, and the postage correction amount may be based on a measured weight and/or dimension of each pieces of residual mail.