FIRE Retirement Planning logoFIRE Retirement Planning logo

Retirement planning basics: a practical starter guide

6 min read • Last reviewed 2026-10-18

Start here if you're new to retirement planning. Learn the key numbers, order of operations, and how to build a robust plan.

Step 1: Know your spending

You can’t plan without knowing how much you’ll actually need. Track real spending for 3–6 months across all categories.

Must-haves Nice-to-haves
Housing (rent/EMI, tax, maintenance), food, utilities, transport, healthcare, insurance, basic clothing Travel, hobbies, dining out, gifts, upgrades

Rule of thumb: Plan for your “must spend” to be covered with high confidence. Your “want to spend” can be more flexible in down years.

Step 2: Estimate your retirement number

A simple starting point: Annual spending × 25 (4% rule). For more conservatism, use 28–30× (3.33–3.57%).

Example: ₹12 lakh/year spending → ₹3 crore (25×) to ₹3.6 crore (30×).

Adjust down if you have reliable guaranteed income (pension, state pension, annuity). Don’t count uncertain rental income.

Use our retirement planning calculator to model this.

Step 3: Build your safety net

Before maximising long-term investments:

  1. Emergency fund: 6–12 months of essential spending, in liquid cash.
  2. Insurance: Adequate health insurance (critical). Term insurance if others depend on you.
  3. High-interest debt: Pay off credit cards and high-interest loans first — guaranteed “return”.
  4. Short-term goals: Don’t invest money you’ll need in <2–3 years in volatile assets.

Step 4: Invest for growth

For money you won’t need for 5–10+ years:

  • Keep costs low: Prefer low-cost index funds over actively managed funds. Fees compound against you.
  • Diversify globally: Don’t put everything in one country or one sector.
  • Stay consistent: Automate investments (SIPs). Time in the market beats timing the market.
  • Match horizon to assets: Near-term (1–5 years) = safer (cash/debt). Long-term (10+ years) = growth assets (equities) usually make sense.
  • Rebalance occasionally: Once a year is fine.

Step 5: Protect against key risks

Risk Protection
Inflation Plan in real terms; keep equity exposure for long-term growth (How inflation changes your plan).
Sequence of returns 1–2 year cash buffer at retirement start; spend flexibly in down years (Sequence of returns, Bucket strategy).
Healthcare costs Budget extra for medical; maintain adequate health cover.
Longevity Plan to age 90–95, use conservative SWR, or build flexibility.
Behavioural (panic-selling) Write down rules (“if down 20%, I don’t sell growth to fund luxuries”). Automate.
Taxes Be tax-efficient across account types where sensible.

Step 6: Stress-test your plan

Don’t stop at a single projection. Test for resilience:

  1. Monte Carlo: See probability of success across thousands of paths. Aim for 80–95% under conservative assumptions (Monte Carlo simulator).
  2. Bad-early sequence: Check how a poor first 5 years affects you (Sequence of returns calculator).
  3. Inflation shock: Try +1–2% inflation.
  4. Spending shock: Add unexpected large expenses.
  5. Flexibility test: Can you cut discretionary by 10–20% for 2–3 years? If yes, your plan is more robust.

Order of operations (simple)

  1. Track spending (3–6 months) → know your number
  2. Emergency fund (6–12 months) + cover insurance
  3. Kill high-interest debt
  4. Capture any employer match (free money) if available
  5. Invest consistently in a diversified, low-cost portfolio
  6. Avoid lifestyle creep — invest raises
  7. Review annually — adjust for life changes

Common mistakes to avoid

  • Using gross income. Plan on spending, not earning.
  • Ignoring inflation. Always think in real (today’s money) terms.
  • Chasing returns. Consistency > perfection.
  • Over-optimistic returns. Use 4–5% real after fees for balanced portfolios.
  • Planning to too short an age. Living to 95 is a realistic possibility.
  • All-or-nothing. Starting small beats waiting for “perfect”.
  • Too much cash long-term. Inflation erodes it.
  • Not testing downside. The best-looking projection rarely shows the worst case.

Bottom line

Retirement planning doesn’t need to be complicated. Spend less than you earn, invest the difference consistently in a low-cost diversified portfolio, protect against downside with buffers and flexibility, and review once a year. That’s 80% of what matters. Everything else is optimisation.

Key takeaways

Sources