Savings ratio
Also written Savings ratio (life-cycle)
Savings relative to income, which the workbook says should ideally rise over the life cycle — read alongside a falling expense ratio and a debt-to-income ratio that peaks around a big loan.
In plain language
A single savings figure does not mean much without knowing what it is a fraction of. Savings ratio is savings measured against income, and the workbook gives it a direction: it should ideally rise over time, as an individual moves from one life-cycle stage to the next and income and expenses both change.
It is one of three ratios the workbook uses together to check whether a household's budget is actually on track for its goals — not a number to check once, but one to track as the shape of a career and a family changes.
How it works
The workbook names three ratios as a check on whether income and expenses are being managed to reach a household's goals:
| Ratio | What it measures | Expected direction over the life cycle |
|---|---|---|
| Savings ratio | Savings relative to income | Should ideally rise over time |
| Expense ratio | (Implicitly, expenses relative to income) | Should ideally move down, indicating the household is saving more |
| Debt-to-income ratio | The extent of income going towards servicing debt | Peaks when a large loan (e.g. a home loan) is taken, then moves down as income rises over time |
The three move together as a story: early in working life, a large loan can push the debt-to-income ratio to its peak; as income rises and the loan is paid down, that ratio falls, the expense ratio should fall too, and the savings ratio should climb as a result.
If the savings ratio is not rising the way it should, the workbook's instruction is direct: changes need to be made in the budget to get savings back on track — which, per the same chapter's budgeting steps, means looking first at discretionary spending rather than essential costs or chasing extra income.
A worked example
The Sharmas track their household ratios at three points in their working life.
| Stage | Income (monthly) | Savings (monthly) | Savings ratio | Note |
|---|---|---|---|---|
| Just after taking a home loan, age 30 | Rs 80,000 | Rs 4,000 | 5% | Debt-to-income ratio near its peak — a large EMI dominates the budget |
| Mid-career, age 40, loan partly repaid | Rs 1,10,000 | Rs 16,500 | 15% | EMI is a smaller share of a larger income; debt-to-income ratio has fallen |
| Pre-retirement, age 50, loan closed | Rs 1,40,000 | Rs 35,000 | 25% | No EMI at all; savings ratio has risen through each stage, as the workbook expects |
The savings ratio moves from 5% to 15% to 25% — rising over time, exactly as the workbook says it ideally should, as the family moves through the life cycle. If instead the ratio had stayed flat or fallen at age 40 despite the higher income, that would be the signal the workbook points to: the budget needs revisiting, most effectively by trimming discretionary spending before touching essential costs.
Why NISM asks about it
Chapter 3 (Retirement Planning Process), section 3.1.2, introduces the savings ratio immediately after the four-step budgeting process, alongside the expense ratio and the debt-to-income ratio, as the three checks on whether a household is managing its budget to plan. Expect a question on the expected direction of each of the three ratios over the life cycle, and a scenario question asking whether a described household's numbers match what the workbook expects.
Common exam traps
- Savings ratio should rise; expense ratio should fall. The two move in opposite directions as a household matures financially — do not answer the same direction for both.
- Debt-to-income ratio peaks around a large loan, then falls — it is not expected to fall monotonically like the expense ratio; it has a hump shape tied to major borrowing events such as a home loan.
- These are diagnostic ratios, not one-time calculations. The workbook frames them as something to track as life stages change, not a single number computed once at the start of a financial plan.
- A flat or falling savings ratio is the trigger to revise the budget — and the workbook's own guidance (from the same section) is to cut discretionary spending first, since income is harder to expand than expenses are to control.
- Do not confuse the savings ratio (savings ÷ income) with the plain rupee savings target discussed alongside it — the ratio is about the trend as a fraction of income, not the absolute rupee amount saved.
Check yourself
1.Once the income required in retirement has been estimated, which of the following is NOT one of the variables the workbook lists for calculating the retirement corpus?
- a)The periodic income required
- b)The expected rate of inflation
- c)The individual's current savings ratio
- d)The period of retirement, i.e. the period for which income has to be provided by the corpus
Show the answer
Answer: (c) The individual's current savings ratio
The workbook says: the next step in retirement planning is to calculate the corpus that will generate the income required in retirement. The variables in this calculation are:
- The periodic income required
- The expected rate of inflation
- The rate of return expected to be generated by the corpus
- The period of retirement, i.e. the period for which income has to be provided by the corpus.
Options A, B and D are on the list. The savings ratio in option C is not, so it is the answer. The savings ratio is a budgeting measure (the savings relative to income) used to check whether a household is saving enough as it moves through the lifecycle. It affects how the corpus is accumulated, not how large the corpus must be.
How the variables pull: higher the rate of return that the funds are expected to earn, lower will be the required corpus. Inflation pushes up the expenses and therefore the amount of retirement savings required. A longer period of retirement means income must be funded for more years, so a larger corpus is needed.
Where this is taught
- Series XVII · Chapter 3: Retirement Planning Processintroduced here
- Series X-A · Chapter 3: Cash Flow Management and Budgetingintroduced here
Related terms
- Disposable incomeWhat remains from monthly income after mandatory expenses — taxes and loan repayments — are met; essential living costs and discretionary spending are paid out of it, and what is left is savings.
- Financial planningThe process of estimating what a person will need money for across their lifetime and building an investment plan to meet each of those needs — savings with a purpose attached.
- Zero base budgetingBuilding a budget from a clean slate each period and justifying every expense afresh, instead of adjusting last period's numbers — a corporate technique applied to household budgets.
- Monthly surplus in handThe cash left with a household at the end of the month after every expense and investment — which is smaller than its savings, because mandatory deductions such as PF are savings too.
- BudgetingListing and itemising a household's income and expenses — mandatory, essential and discretionary — to keep spending within income and generate a targeted amount of savings for goals.
- Middle Earning YearsThe lifecycle stage of peak, stable income and settled expenses, when 50 to 60 percent of the portfolio can stay in growth assets and any shortfall in retirement saving should be caught up.
- Periodic investingBuilding a holding in a volatile asset through small regular instalments rather than one lump sum, so more units are bought when prices are low and the average cost falls.
- Emergency fundA pool of money held in liquid assets, sized at six months of household expenses, kept aside so that an interruption in income does not force the sale of long-term investments.
- Expenses ratioAnnual recurring expenses divided by annual income — the share of a household's earnings consumed by regular living costs, and the exact mirror of the savings ratio.
- Savings to income ratioTotal accumulated savings divided by annual income — a measure of how prepared a household is for long-term goals such as retirement, expected to rise with age.
- Cash flow mismatchA timing gap in which money going out falls due before money coming in arrives — so a household that earns more than it spends can still run short of cash and be pushed into costly borrowing.