FIRE Number Calculator Singapore: How Much You Need to Retire Early [2026]

From 1 July 2026, Singapore's statutory retirement age is 64 and the re-employment age is 69. People pursuing FIRE, short for financial independence, retire early, aim to stop needing a salary decades before either milestone. The question that decides whether they can is a single number.

Your FIRE number is the size of the investment portfolio that can fund your yearly spending on its own. The basic formula divides annual spending by a withdrawal rate, and the most quoted rate comes from William Bengen's 1994 study of US market history, which found a 4% initial withdrawal, raised each year for inflation, lasted at least 33 years in every period tested. An early retiree in Singapore, though, may need the money to last 40 or 50 years.

Singapore adds two features that change the arithmetic. CPF LIFE starts paying from 65 for members born in 1954 or later, so spending after 65 needs less from your portfolio. SRS money only comes out penalty-free from your prescribed retirement age. Retiring at 45 therefore splits into two phases: a bridge funded entirely by your own investments, then a longer stretch where CPF LIFE carries part of the load.

You can calculate a FIRE number in three ways: the one-line formula at 3%, 3.5% or 4%, a two-phase version that subtracts expected CPF LIFE income after 65, or a Coast FIRE target that only needs to grow on its own until retirement.

This guide explains the FIRE number formula, how to estimate spending in Singapore, a 3% to 4% calculator table, why the 4% rule needs care for early retirees, how CPF LIFE and SRS change the number, a worked case of retiring at 45, healthcare costs and a set of stress tests.

FIRE number at a glance

The headline figures for 2026 come from the formula and from the CPF, SRS and MOM rules that shape when other income can start.

Source: CPF payout eligibility age, IRAS tax on SRS withdrawals, MOM re-employment (as of 19 October 2026). Spending rows are worked examples.

The FIRE number formula

The calculation has two inputs: the spending your portfolio must cover each year, and the share of the portfolio you plan to withdraw in the first year. FIRE number = annual portfolio-funded spending ÷ initial withdrawal rate. Dividing by 4% is the same as multiplying by 25; dividing by 3.5% multiplies by about 28.6, and dividing by 3% multiplies by about 33.3.

The spending figure is what the portfolio pays after any other income. If you expect rent, part-time earnings or, later, CPF LIFE, the portfolio covers only the remainder. The withdrawal rate applies to the first year; in later years you raise the amount with inflation, so the percentage of the portfolio you take out drifts up or down with markets.

You can run the formula yourself in a few lines of Python or in a spreadsheet:

monthly_spend = 4000
annual_spend = monthly_spend * 12
for rate in (0.04, 0.035, 0.03):
    print(rate, round(annual_spend / rate))

For S$4,000 a month, that gives S$1,200,000 at 4%, S$1,371,429 at 3.5% and S$1,600,000 at 3%. A half-point change in the rate alone moves the target by S$171,429 to S$228,571.

How to estimate your annual FIRE spending in Singapore

Start from what you actually spend today, then adjust for the costs that change once you stop working. Twelve months of bank and card statements give a better base than a budget built from memory.

Group the spending into lines you can test separately:

• Housing: mortgage instalments until the loan ends, conservancy or management fees, property tax, utilities and repairs, or rent if you do not own.
• Food and transport: groceries, hawker and restaurant meals, public transport, and car costs if you keep one.
• Insurance and health: MediShield Life or an Integrated Shield Plan, riders, term cover while dependants rely on you, and out-of-pocket medical bills.
• Family: support for parents, children's education and any allowance to adult children.
• Irregular costs: travel, appliance and gadget replacement, home renovation, and gifts, averaged into a yearly figure.
• Tax: income tax on rent, SRS withdrawals or part-time income.

Some costs fall after you stop working, such as commuting and work clothes. Others rise: health insurance premiums climb with age, and you lose employer medical benefits. Your CPF contributions also stop when your salary does, which affects your CPF LIFE payout later.

Lean FIRE, traditional FIRE, fat FIRE and Coast FIRE

FIRE comes in several versions, separated by spending level and by how much of the target you need on day one. No official thresholds exist, so the spending levels in the table are examples.

Example only, based on Bengen (1994), Journal of Financial Planning (as of 19 October 2026). Assumes the portfolio pays all spending and withdrawal rates are planning inputs.

Coast FIRE works backwards. It is the amount you need invested today so that, with no further contributions, the portfolio grows to your full FIRE number by a chosen age. If you need S$1,200,000 at 65 and expect 3% a year after inflation, a 35-year-old needs about S$494,384 invested now; at 2% after inflation, the figure rises to about S$662,485. After that, your salary only has to cover current spending.

FIRE calculator: 3%, 3.5% and 4% scenarios

Each figure is the portfolio needed if investments pay all your spending, before any CPF LIFE, rent or part-time income.

Example only, based on Bengen (1994), Journal of Financial Planning (as of 19 October 2026). Assumes spending in today's dollars and no other income.

Moving from 4% to 3% raises every target by a third. For a S$6,000 budget, that is an extra S$600,000, which can mean several more years of work.

FIRE numbers for S$3,000, S$4,000 and S$6,000 of monthly spending at 3%, 3.5% and 4% withdrawal rates

Why the 4% rule needs care for early retirees

Bengen tested withdrawals against a 30-year minimum, using US stocks and intermediate-term Treasuries, and recommended 50% to 75% in stocks. In the same study, a 3% rate lasted at least 50 years in every case. A 45-year-old retiring today may need money until 95, which is the 50-year end of that range. Four issues widen the gap between the historical rule and your plan.

Sequence of returns

The order of returns matters once you are withdrawing. Take S$1,200,000 with S$48,000 withdrawn at the start of each year, and the same ten annual real returns averaging 4%, once with two losing years first and once with them last.

Example only. Assumes S$48,000 withdrawn at the start of each year and returns of −20%, −10%, 5%, 8%, 10%, 12%, 6%, 7%, 9% and 13%.

Same average, same withdrawals, and a gap of S$263,144 after a decade. Losses early in retirement force you to sell more units at low prices, and those units are not there for the recovery.

Horizon, currency and costs

A longer horizon leaves more room for a bad stretch. Your spending is in Singapore dollars while most global portfolios hold US-dollar assets, so exchange-rate moves add volatility to the income. Fund expenses and advisory fees come out of the same return, and every percentage point of cost is a point less available to withdraw.

Flexibility helps more than precision

Plan for a lower starting rate, such as 3% to 3.5%, or agree in advance which spending you would cut in a bad year. A cash buffer covering one to two years of withdrawals lets you avoid selling after a fall.

How CPF LIFE changes your FIRE number after 65

CPF LIFE pays a monthly income for life, starting from 65 and rising by up to 7% for each year you defer, up to 70. For an early retiree, that splits the plan into a bridge phase with no CPF income and a later phase where CPF LIFE covers part of the bills.

Payout estimates depend on your cohort and balances. For members turning 55 in 2026, CPF Board estimates about S$950, S$1,780 or S$3,440 a month from 65 at the Basic, Full or Enhanced Retirement Sum. Someone who stops working at 45 stops making CPF contributions too, so their own figure can differ; the Retirement Payout Planner on the CPF website shows yours.

To build the two-phase number, take S$4,000 a month of spending and an assumed CPF LIFE payout of S$1,500 a month from 65, expressed in today's dollars. The portfolio must fund S$48,000 a year before 65 and S$30,000 a year after. At 3.5%, the post-65 FIRE number is S$857,143. The bridge years are funded by drawing down capital, discounted at an assumed 2% real return.

Example only, based on CPF LIFE plans (as of 19 October 2026). Assumes S$4,000 monthly spending, S$1,500 of CPF LIFE a month from 65 in today's dollars, a 2% real return and a 3.5% withdrawal rate from 65.

Retiring at 45, CPF LIFE barely changes the target, because 20 years of full spending use up the saving. Retiring at 55 or 60, the same payout cuts the number by S$228,486 to S$364,317.

Two-phase FIRE number by retirement age, split into bridge capital and capital for age 65 onwards

Should CPF, SRS and property count in your FIRE number?

Only money you can spend when you need it belongs in the bridge. Each type of asset fits a different phase.

Source: IRAS tax on SRS withdrawals, CPF LIFE (as of 19 October 2026)

SRS is a later-phase asset. Your prescribed age is 62 for first contributions before 1 July 2022, 63 for those from then to 30 June 2026, and 64 from 1 July 2026. From that age, 50% of each withdrawal is taxable and withdrawals can be spread over 10 years; IRAS shows S$40,000 a year coming out with no tax for a retiree with no other income. Used that way, SRS can fund the years between your prescribed age and 65 at low tax and shorten the portfolio-only part of the bridge.

Your home is where you live, so its value only counts if you have a dated plan to sell, rent out or right-size. Pledging a property to withdraw CPF savings above the Basic Retirement Sum reduces your Retirement Account and therefore your CPF LIFE payouts.

Worked case: retiring at 45 with CPF LIFE at 65

Take the 45-year-old from the two-phase table, starting with S$1,377,399 and earning 2% a year after inflation. They withdraw S$48,000 a year until 64, then S$30,000 a year once CPF LIFE begins.

Example only, based on CPF payout eligibility age (as of 19 October 2026). Assumes a steady 2% real return, withdrawals at the start of each year and S$1,500 a month of CPF LIFE from 65 in today's dollars.

The balance falls by more than a third during the bridge, then declines more slowly once CPF LIFE starts, leaving S$311,213 at 95 in today's dollars. Real returns are never this steady, and the first ten years carry most of the risk, as the sequence-of-returns example showed.

Portfolio balance from age 45 to 95 for a retiree spending S$4,000 a month with CPF LIFE from 65

Healthcare and insurance costs over a 40-year retirement

Health costs rise as you age, and early retirees lose employer medical cover. MediShield Life premiums show the pattern.

Source: Ministry of Health MediShield Life premiums and subsidies (as of 19 October 2026). Premiums include 9% GST and apply to policies starting or renewing from 1 April 2025.

The premium at 81 to 83 is more than three and a half times the premium in your forties, before any Integrated Shield Plan or rider on top. Budget for premiums rising across the bridge, and keep a separate reserve for deductibles and co-payment.

Two CPF figures help size the rest. The Basic Healthcare Sum is S$79,000 in 2026 for members below 65, which is the cap on MediSave savings for that group. For long-term care, CareShield Life pays S$689 a month in 2026 for eligible claims, subject to a disability assessment.

Stress test your FIRE number

A FIRE number built on one set of assumptions can mislead, so test how much margin you have.

Inflation and a flat CPF payout

The CPF LIFE Standard Plan pays a level amount, and the Escalating Plan starts lower and rises 2% a year. A flat S$1,500 a month loses real value every year.

Example only. Assumes a level S$1,500 monthly payout and constant inflation.

At 3% inflation, the payout covers 45% less in real terms by age 85 than it did at 65. Either choose the Escalating Plan or let the portfolio withdrawal rise to fill the difference.

A weak market at the start

Rerun your plan with a 20% fall in the first year. If your withdrawal rate would climb above about 5% of the remaining balance, decide now which spending you would trim, and hold one to two years of withdrawals in cash or short-term bonds.

Living longer than planned

Run the plan to 95 or 100. CPF LIFE pays for life, so the portfolio only has to cover the gap above it, but a portfolio sized for 85 can run out in your late eighties.

Annual FIRE review

Recalculate once a year. Update actual spending, portfolio value and asset allocation, check your CPF statement for the latest CPF LIFE estimate, and review insurance premiums. If markets have done well and your withdrawal rate has fallen below your target, you can raise spending; if it has risen, trim the flexible part. Keep track of your savings rate before you retire, because it sets how quickly you reach the number.

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Investment values can fall as well as rise, and a withdrawal rate that worked in the past may not work in future markets.

Frequently asked questions

Here are short answers to the questions people ask most when working out a FIRE number in Singapore.

How much money do I need to retire at 40 in Singapore?

Multiply the yearly spending your portfolio must fund by 25 at a 4% rate, or about 33 at 3%. Retiring at 40 means 25 years before CPF LIFE can start at 65 and possibly 55 years in total, so a rate near 3% is the safer base: S$4,000 a month needs about S$1.6 million.

Does CPF count towards FIRE?

CPF counts as future income. From 65, CPF LIFE pays a monthly amount for life, so subtract your expected payout from spending for the years after 65; your CPF balances cannot fund the bridge before then.

Is the 4% rule safe in Singapore?

The rule comes from US historical data over roughly 30-year retirements. Early retirees in Singapore face longer horizons, currency swings and costs, so testing 3% to 3.5% and keeping spending flexible gives more margin.

Can SRS be used for FIRE?

Yes, for the later phase. Withdrawals before your prescribed age of 62, 63 or 64 are fully taxable with a 5% penalty, while withdrawals from that age are 50% taxable and can be spread over 10 years at low tax.

Can you retire before the official retirement age?

Anyone can stop working at any age. The statutory retirement age of 64 protects employees who want to keep working, while CPF LIFE payouts depend on your payout eligibility age, which is 65 for members born in 1954 or later.

What is Coast FIRE?

Coast FIRE means you have invested enough that growth alone can reach your full FIRE number by retirement. At 3% a year after inflation, S$494,384 invested at 35 grows to about S$1.2 million by 65 with no further contributions.