This identifies the formula type used to calculate the Primary and Secondary Expected Family Contributions (EFCs).

The ISIR codes and their meanings are as follows:

Full Needs Test (FNT)
Simplified Needs Test (SNT)

blank None Calculated
1 FNT: Dependent
2 FNT: Independent without dependents other than a spouse
3 FNT: Independent with dependents other than a spouse
4 SNT: Dependent
5 SNT: Independent without dependents other than a spouse
6 SNT: Independent with dependents other than a spouse