SWP: creating your own monthly pension

A SWP is a standing instruction to redeem a fixed rupee amount on a fixed date. The fund sells exactly enough units to raise it, credits your bank account, and leaves the rest invested.

It is the mirror image of a SIP, and it is the correct instrument for turning a corpus into a monthly income — better than IDCW on tax, on predictability, and on control.

Why it beats an IDCW payout

Three reasons, in order of how much money they are worth:

1. Only the gain is taxed. When you withdraw ₹30,000, part of it is your own capital coming back and part is profit. Tax applies to the profit alone. An IDCW payout is taxed at your slab rate on the whole amount.
2. You choose the amount and the date. ₹30,000 on the 3rd, every month. An IDCW is whatever the AMC declares, whenever it declares it — and in a bad year, possibly nothing.
3. There is no TDS on a resident’s redemption. The tax is settled in your return, not withheld up front.

How the tax actually works

Each instalment is a redemption, and units are matched oldest first. So each withdrawal inherits the purchase date and cost of your earliest remaining units.

Two consequences worth planning around:

• Early in a SWP, most of each withdrawal is capital rather than gain, so the taxable portion is small. It grows over the years as the oldest, cheapest units get consumed.
• For an equity-oriented fund, units held a year or more attract 12.5% above the ₹1,25,000 annual exemption. A moderate SWP from a long-held equity corpus can run for years with very little actual tax — the gain component often sits near or under the exemption.

Start a SWP too soon after investing and you get the opposite: units under a year old, taxed at 20% short-term, and possibly an exit load as well. Most schemes waive the load on a modest percentage of units per year; check the fund page before setting the amount.

⚠️ Beware of anything advertising a “tax-free monthly income” SWP. It is not tax-free. It is efficiently taxed, which is a different and less exciting claim.

The risk nobody mentions: sequence

A SWP’s danger is not the average return. It is the order of returns.

Withdrawing a fixed rupee amount means selling more units when the NAV is low. That is rupee-cost averaging running in reverse, and it works against you. A market fall early in a withdrawal phase permanently removes units that would have participated in the recovery — so two investors with identical average returns over twenty years can end with wildly different outcomes purely because of the order those returns arrived in.

This is why an all-equity SWP is a bad idea however good the fund is. The usual defences:

• Keep two to three years of withdrawals in something short-duration, so a bad year is funded without selling equity into it. See debt funds for which category actually suits that.
• Withdraw a sustainable rate. The arithmetic is unforgiving: a rate above what the corpus earns is a countdown, and the countdown accelerates in a bad sequence. Run the numbers above, then run them again assuming the first three years go badly.
• Be willing to cut the amount in a bad year. Flexibility is worth more than any fund selection decision here.

A practical setup

• Hold the corpus in Growth, never IDCW — you want to control the timing.
• Split it: a short-duration or liquid sleeve for the next few years of withdrawals, the rest in equity for the years after that.
• Set the SWP from the sleeve you intend to spend, and refill it from equity in good years rather than on a schedule.
• Revisit the amount annually against inflation. A fixed rupee SWP loses about a third of its purchasing power over a decade at 4% inflation.

The SWP calculator above shows how long a corpus lasts at a given rate; the financial freedom calculator runs the whole lifecycle — building the corpus with a step-up SIP, then drawing it down with an inflation-linked withdrawal.

Key takeaway

A SWP taxes only the gain portion of each withdrawal, lets you pick the amount and the date, and beats an IDCW payout on every axis that matters. The danger is not the average return but the order of returns — so keep two to three years of withdrawals out of equity, size the rate conservatively, and be willing to cut it in a bad year.