expedient

ex·pe·di·ent
adj.
1. Appropriate to a purpose.
2.
a. Serving to promote one's interest: was merciful only when mercy was expedient.
b. Based on or marked by a concern for self-interest rather than principle; self-interested.
3. Obsolete Speedy; expeditious.
n.
1. Something that is a means to an end.
2. Something contrived or used to meet an urgent need

Since loans to MFIs qualify as priority sector lending, banks have found it expedient to meet their targets through loans to MFIs.