📚 PASS Investment Adviser (Level 2) Difficulty: Beginner ℹ️ Info   ~5 min read
📌 Chapter 6.2 — Calculations for Retirement Planning

Imagine you are reviewing a financial plan for a mid-career professional earning 25 Lakhs per annum. Your client assumes that since their current monthly burn rate is 1.5 Lakhs, they need a retirement corpus that sustains this exact lifestyle indefinitely. As a research analyst, your primary responsibility is to deconstruct this ‘flat’ expenditure assumption before running any Present Value (PV) calculations. Applying a blanket percentage reduction without auditing the constituent parts of that expenditure—such as EMIs, commute costs, and children’s education—often leads to a significant miscalculation of the required corpus.

Expense composition is the bedrock of accurate retirement modeling. During the accumulation phase, a significant portion of cash flow is directed toward debt servicing, such as home loans or personal credit facilities, and career-related costs like professional development and professional attire. Once an individual retires, these ’transitory’ expenses typically disappear, theoretically reducing the required monthly payout. However, analysts must distinguish between these vanishing costs and ‘sticky’ expenses that remain, such as housing maintenance, utilities, and lifestyle upkeep, which often continue well into the post-retirement years.

To see this in practice, consider a client whose current monthly outflow includes 40,000 INR in home loan EMIs. If the client intends to be debt-free by age 60, excluding this 40,000 INR from the projected retirement budget is mathematically sound. Conversely, neglecting to adjust for ‘inflation-sensitive’ post-retirement costs, such as medical insurance premiums or the rising cost of private eldercare, leads to an underfunded model.

A precise analyst builds a line-item projection, categorizing expenses into ‘must-haves’ and ‘variable lifestyle choices’ to create a realistic floor for the retirement withdrawal rate.

Ultimately, the quality of your recommendation hinges on the granularity of these inputs. By isolating expenses that drop off at retirement and adjusting them against the rising healthcare inflation index, you move from a generic projection to a bespoke financial strategy. A model that fails to differentiate between a loan repayment that terminates at age 55 and recurring grocery expenses that escalate with inflation will inevitably provide a skewed view of the capital required at the retirement date.1

Nuance

⚠️ Nuance
Candidates often fall into the trap of applying a uniform ‘rule of thumb’ (like 60% of current income) to every client profile without questioning the underlying asset-liability mix. In reality, a client with a high debt-to-income ratio will see a sharper decline in necessary post-retirement income than a debt-free client. Analysts must avoid using static percentages, as they mask the unique transition of a client’s cash flow from ‘debt-heavy’ to ’lifestyle-dependent.’

Check Your Understanding

Practice Question 1

A 45-year-old client currently pays 50,000 INR monthly toward a mortgage that will be fully repaid by age 58. When projecting retirement expenses starting at age 60, how should the analyst treat this specific cash flow?

Practice Question 2

Which of the following factors is most critical when adjusting current expenses to estimate post-retirement cash requirements?

This is a companion read for Section 6.2 — Calculations for Retirement Planning from PASS Investment Adviser (Level 2) by Akhilesh Gururani, available on Amazon Kindle.

Copyright © 2026 Akhilesh Gururani. All rights reserved.

  1. When calculating the PV, ensure that the discount rate used is the real rate of return—nominal return minus inflation—to maintain internal consistency in your cash flow model. ↩︎