Sponsorship is the difference between a festival your society can afford and the festival your society actually wants. It is also the income stream most committees handle worst — usually because a sponsorship gets recorded as though it were a large contribution.
A sponsorship is not a big contribution
A contribution is an obligation shared by every unit. A sponsorship is a voluntary, named, over-and-above gift attached to something specific — the idol, the mahaprasad, the sound, a garba night. The sponsor expects recognition. Recording it in the same bucket as contributions makes both numbers meaningless.
Name the items, and name them per festival
A sponsor gives to a thing, not to a fund. “Would you sponsor the mahaprasad?” converts; “would you like to donate more?” does not. And the things differ by festival — a Ganpati idol has no equivalent at Diwali.
Kosh lets you configure the sponsorship items on each festival, so your committee is offering the right list at the right time rather than a generic one.
Credit them properly, publicly
Capture the dedication — “in memory of…”, “with best wishes from…” — and carry it through to the published report. That printed line is most of what the sponsor is actually buying, and it is what makes next year’s conversation a formality. Sponsors also get their own numbered receipt, which matters if they are a business claiming it in their books.