Concept of charity does exist in Hinduism and is termed a Daana. But does Hinduism support the concept of continued charity??
Continued charity :- Effect of charity which remains till its demolition. Eg. Suppose a person donates Rs.5000/- for school construction. Then he will get its punnya according to his contribution not only once, but till the school building gets demolished.
Note :- School is just a example of good work we can consider other examples like Water Pump in remote village, mandir construction etc. through which many people will continuously be benefited.