How a Systematic Withdrawal Plan works

When you start a Systematic Withdrawal Plan, you are not opening a new kind of account. You already own units of a scheme. You tell the asset management company (AMC) a rupee amount, a frequency, and a start date. On each scheduled day the registrar computes how many units must be sold so that, at that day’s NAV, you receive the amount you asked for. Those units leave your folio. Cash arrives in the bank account linked to the folio, usually within the scheme’s redemption timeline.

Units in, cash out

Suppose you hold 10,000 units and the NAV is ₹52.30. You have asked for ₹15,000 this month. The AMC redeems 15,000 ÷ 52.30 ≈ 286.81 units. You now hold about 9,713.19 units. Next month the NAV will be different. If it has risen, fewer units are sold for the same rupees. If it has fallen, more units disappear to pay the same bill. That is why two neighbours with the same starting corpus and the same SWP amount can have very different leftover units after five years.

The leftover units are the entire “remaining corpus” story. They continue to follow the scheme — equity, hybrid, or debt — with all of that scheme’s daily noise. An SWP does not move you to a safer portfolio by itself. If the folio is an equity fund, you are still taking equity risk while spending.

Growth happens on what you have not sold

People sometimes describe SWP as “taking interest and leaving principal.” That language belongs to a bank deposit. In a mutual fund there is no separate interest bucket sitting aside for you. There is only NAV. When the remaining units rise in value, your corpus can grow even as cash leaves. When they fall, you may be selling more units into a decline — the sequence-of-returns problem that a smooth calculator cannot show.

SwpRupee approximates the NAV path with a single annual return turned into an effective monthly rate. That is useful for sketching a plan. It is not how a real year feels. A real year has months that pay you while the market is down, and months that pay you while the market is up. The unit count records both.

What you set up at the AMC

• Folio and scheme (sometimes a specific plan or option, such as growth).
• Withdrawal amount in rupees, or occasionally a fixed number of units.
• Frequency — monthly is the usual choice for household income.
• Start date and, if you want one, an end date or a number of instalments.
• Bank mandate already registered for redemptions.

Growth option is the common pairing with SWP. You want the scheme to reinvest its own income in NAV, then you decide the cash amount. IDCW (dividend) option plus SWP is usually messy: you may receive both a dividend and a redemption in the same month.

Exit loads, lock-ins, and “first-year” traps

Many equity and hybrid schemes charge an exit load if you redeem units within a short window after purchase, often one year. An SWP that starts too soon after a lump-sum or SIP instalment can sell those young units and trigger the load. ELSS and some retirement solutions have lock-in periods; you cannot SWP what is still locked. Read the scheme information document for the fund you actually hold. This website cannot see it.

SWP is a plan, not insurance

If the NAV path is weaker than you hoped, or if you raise the withdrawal because prices at the kirana store rose faster than your inflation box, the unit balance can hit zero. There is no insurer topping it up. That is the feature and the risk: flexibility of amount and date, with market risk still sitting on your side of the table.

For a numeric walk-through, use the SWP calculator or the worked example. For how this differs from accumulating with SIPs, see SWP vs SIP.