X0101 EFFECT 33 LIVE 2016-06-27 0000940394-16-002538 485APOS 0000745463 EATON VANCE MUTUAL FUNDS TRUST 002-90946 S000005286 Eaton Vance Floating-Rate Fund C000014440 Eaton Vance Floating-Rate Fund Advisers Class S000005286 Eaton Vance Floating-Rate Fund C000014441 Eaton Vance Floating-Rate Fund Class A S000005286 Eaton Vance Floating-Rate Fund C000014442 Eaton Vance Floating-Rate Fund Class B S000005286 Eaton Vance Floating-Rate Fund C000014443 Eaton Vance Floating-Rate Fund Class C S000005286 Eaton Vance Floating-Rate Fund C000014444 Eaton Vance Floating-Rate Fund Class I S000005287 Eaton Vance Floating-Rate & High Income Fund C000014445 Eaton Vance Floating-Rate & High Income Fund Advisers Class S000005287 Eaton Vance Floating-Rate & High Income Fund C000014446 Eaton Vance Floating-Rate & High Income Fund Class A S000005287 Eaton Vance Floating-Rate & High Income Fund C000014447 Eaton Vance Floating-Rate & High Income Fund Class B S000005287 Eaton Vance Floating-Rate & High Income Fund C000014448 Eaton Vance Floating-Rate & High Income Fund Class C S000005287 Eaton Vance Floating-Rate & High Income Fund C000014449 Eaton Vance Floating-Rate & High Income Fund Class I S000005287 Eaton Vance Floating-Rate & High Income Fund C000171616 Eaton Vance Floating-Rate & High Income Fund Class R6 S000019373 Eaton Vance Floating-Rate Advantage Fund C000053808 Eaton Vance Floating-Rate Advantage Fund Advisers Class S000019373 Eaton Vance Floating-Rate Advantage Fund C000053809 Eaton Vance Floating-Rate Advantage Fund Class A S000019373 Eaton Vance Floating-Rate Advantage Fund C000053810 Eaton Vance Floating-Rate Advantage Fund Class B S000019373 Eaton Vance Floating-Rate Advantage Fund C000053811 Eaton Vance Floating-Rate Advantage Fund Class C S000019373 Eaton Vance Floating-Rate Advantage Fund C000053812 Eaton Vance Floating-Rate Advantage Fund Class I