hello, example: if you have an assets at cost 20000 and no salvege value with 5 years usable life and you use sume of year digit. 1- you must sum numbers of years 1+2+3+4+5=15 2- dep. for first year 20000*5/15 3- dep. fer second year 20000*4/15
and the juornal entry will be: Dr.dep. exp. Cr. Accu. dep.