Varshik Retirement Fund and Samarthya Pension Trust are considering a merger that would cut the running cost of the combined fund. What are the annual savings, the payback and the gain per member, and what besides cost would drive the decision?

The merger saves Rs 130 crore a year, repays the Rs 150 crore integration cost in about 14 months, and is worth about Rs 1,475 crore to members at an 8% discount rate. Running costs fall from Rs 510 crore to Rs 380 crore. The gain is uneven: a Samarthya member saves about Rs 880 a year, a Varshik member about Rs 350. Because the payback is so short, cost does not decide the merger; governance, investment capability and the members' outcomes do.

Think of two neighbouring housing societies, each paying its own security agency, accountant and lift maintenance contract. Merge them and one accountant serves twice the flats; the cost per flat drops. A pension fund is mostly fixed cost: a custody platform, an administration system, an investment team and a compliance function cost roughly the same to run for Rs 60,000 crore as for Rs 1,00,000 crore. Varshik's 0.45% on Rs 60,000 crore is Rs 270 crore a year; Samarthya's 0.60% on Rs 40,000 crore is Rs 240 crore. Together that is Rs 510 crore, a blended 0.51%. The merged fund's 0.38% on Rs 100,000 crore is Rs 380 crore, so the saving is Rs 130 crore a year, every year.

Set that against the one-off cost. Rs 150 crore of integration spend divided by Rs 130 crore of annual savings is 1.15 years, about 14 months. Measured against the assets, the integration cost is 15 basis points, less than one year of the fee cut. Treating the saving as a level perpetuity at 8%, the merger is worth Rs 1,625 crore less Rs 150 crore, about Rs 1,475 crore. Even if the merged cost came in at 0.41% instead of 0.38%, the five-year savings would still cover the integration bill, so the cost case does not hinge on hitting the target exactly.

The average saving is Rs 130 crore over 22 lakh members, about Rs 591 each a year, but averages hide the split. Fees are charged on balances, so a member gains by the fall in his own fund's rate times his own balance. A Varshik member holds Rs 5 lakh on average and his rate falls 7 basis points, from 0.45% to 0.38%: Rs 350 a year. A Samarthya member holds Rs 4 lakh and his rate falls 22 basis points: Rs 880 a year. Samarthya's members get about three times the saving per head, because their fund was the expensive one.

Small as those numbers look, they compound. A member thirty years from retirement earning 7% gross before fees ends up with 2.0% more at Varshik's new rate than at its old one, and 6.4% more at Samarthya's. On a Rs 4 lakh balance left to grow for thirty years, that is Rs 27.4 lakh instead of Rs 25.7 lakh at retirement. The asymmetry is also the political problem: Varshik's board is being asked to take on an integration project whose benefit mostly lands on the other fund's members. The usual answers are that Varshik's own cost would have risen without scale, that its members gain more from the investment side, or that the merger terms share the integration cost unevenly.

Three things, and in a real board paper they take more pages than the savings. First, investment capability: a Rs 1,00,000 crore fund can run infrastructure, private credit and property allocations in house and negotiate lower external manager fees, which members only see in returns, not in the cost rate. A gain of 10 basis points a year in net return is worth as much to members as the whole fee saving. Second, governance and regulation: trustees owe a duty to members, and in many jurisdictions the regulator tests whether a fund's scale, cost and performance are good enough and pushes small or weak funds to merge. Confirm the current rules where the funds sit. Third, member outcomes beyond price: insurance cover, service quality, the quality of the default option and whether members lose any benefit in the transfer.

The limit of the cost case is that it is the easy part: Rs 130 crore a year against Rs 150 crore once is a decision in favour on almost any assumption, so the real work is the fit. Two investment philosophies, two administration platforms and two cultures do not merge by signing; the integration cost is an estimate and the savings arrive only when one platform is switched off. An interviewer who asks why two such funds would merge is listening for scale economics, investment access and regulatory pressure, in that order, with the numbers as support.