Sinking Funds
3 min read
A sinking fund is money set aside gradually, in advance, for a specific known future expense — an annual insurance premium, a festival season, a friend's wedding gift, an appliance replacement. Unlike an emergency fund (for the unexpected), a sinking fund is for the entirely expected, just not immediate.
The mechanism is simple: divide the expected cost by the number of months until you need it, and set that amount aside automatically each month in a separate account or sub-account. A ₹24,000 annual insurance premium becomes a painless ₹2,000/month set-aside, rather than a jarring lump-sum hit once a year.
Without sinking funds, predictable annual expenses tend to get paid for out of whatever cash is on hand when they arrive — often meaning a dip into the emergency fund, a credit card balance carried forward, or a delayed SIP that month. None of these are dramatic individually, but they quietly undermine the rest of a financial plan.
A practical starting list: insurance premiums (health, term, vehicle), annual subscriptions, festival/gifting season, vehicle maintenance, and any known irregular expense that repeats yearly. Naming them and setting aside monthly turns 'surprise' expenses that aren't actually surprises into a routine, budgeted line item.