Coast FIRE Calculator Canada

What Is Coast FIRE?

Coast FIRE (Financial Independence, Retire Early) is a financial milestone where you’ve invested enough money that — even without adding a single dollar more — your portfolio will grow on its own to fully fund your retirement by your target age. The math relies entirely on compound interest doing the heavy lifting over time.

Once you hit your Coast FIRE number, you can shift gears: take a lower-stress job, go part-time, start a business, or simply stop stressing about retirement savings. You still need to cover your day-to-day expenses, but the retirement side of your finances is essentially handled.

Retirement Accounts: USA vs. Canada

The underlying math of Coast FIRE is identical in both countries, but the account types and government benefits differ significantly. Here’s what to count as “invested assets” in each country.

Note: Enter the total combined value of your investment accounts in the calculator above. Government benefits (CPP/OAS or Social Security) can be entered separately to reduce your required retirement number.

How the Calculator Works

The calculation has two steps. First, your Retirement Number — how much you need at retirement — is calculated using the 4% safe withdrawal rule (or whichever SWR you choose):

The bridge only applies if you retire before your government benefits start. For each year in that gap, your portfolio pays the full amount that CPP and OAS will later cover, so the calculator adds the value of those missing payments, measured at your retirement date, to the number you need. Retire at or after the age your benefits begin and the bridge is zero.

Then, your Coast FIRE Number — what you need invested today — is the present value of that retirement number, discounted back by your real rate of return (investment return minus inflation) over the years until retirement:

All figures are expressed in today’s dollars — inflation is already factored in by subtracting it from the investment return rate. If your current portfolio already exceeds your Coast FIRE Number, you’ve coasted.

Using This Calculator as a Canadian

Canadian users have access to two powerful registered accounts — the RRSP and the TFSA — that can significantly accelerate your path to Coast FIRE thanks to tax-sheltered compounding. Here’s how to get the most accurate results from this calculator:

💡 Tip: Because TFSA growth is completely tax-free, every dollar compounding inside a TFSA is worth more over time than the same dollar in a non-registered account. Maximizing your TFSA first is often the most effective strategy for reaching Coast FIRE sooner.

Why CPP and OAS Change Your Coast FIRE Number So Much

Most Coast FIRE calculators are built for a US audience and simply ignore government benefits, or bury them in an advanced panel. For Canadians that is the single biggest source of an inflated target, because CPP and OAS are indexed and paid for life. They do not start the day you retire, though: OAS begins at 65 and CPP at 60 at the earliest, so if you stop working sooner your portfolio covers the years in between, as the section on retiring before CPP and OAS start explains below.

Take someone who wants to spend $60,000 a year in retirement at a 4% withdrawal rate:

Government benefits of $19,548 a year cover roughly a third of that spending, which cuts the retirement number by $488,700 and the amount you need invested today by about $184,000. That is not a rounding error — it is the difference between “I have a decade to go” and “I have already coasted.”

Two honest caveats. Your actual CPP depends on your contribution history, so use a conservative figure if your working years have gaps, and check your real estimate in your My Service Canada Account. And if you have a workplace defined-benefit pension on top of CPP and OAS, the effect is larger still — our guide to Coast FIRE with a pension walks through the gap method for that case.

Retiring Before CPP and OAS Start

Old Age Security cannot start before 65, and the Canada Pension Plan cannot start before 60. Coast FIRE is popular with people who want to stop full-time work earlier than that, which creates a gap: in the years between your retirement date and the day your benefits begin, your portfolio has to pay for everything. A calculator that simply subtracts CPP and OAS from your spending assumes those cheques arrive the day you retire, and understates what you need.

Using the same example as above — $60,000 a year of spending, $19,548 a year of average CPP and maximum OAS starting at 65, a 4.5% real return and a 4% withdrawal rate — here is what the gap does for a 35-year-old:

Retiring at 55 instead of 65 raises the retirement number by about 16% once the ten unfunded years are counted. This calculator handles it automatically: set Benefits Start at Age to when you plan to claim, and the Where your retirement income comes from panel in your results shows how much it added. If you plan to take CPP early at 60, the gap is shorter, but remember that CPP taken at 60 is permanently reduced, so lower your monthly estimate at the same time.

Why Coast FIRE Numbers Look So Small When You Are Young

The result this calculator gives a 30-year-old often looks too low to be real. It is not a mistake — it is compounding running in reverse. At a 5% real return money roughly doubles every 14 years, so the further away retirement is, the smaller the slice you need banked today. Using the $1,011,300 target above:

• At 25 (40 years to go): about $143,651 — roughly 14% of the final number
• At 35 (30 years to go): about $233,992 — roughly 23%
• At 45 (20 years to go): about $381,148 — roughly 38%
• At 55 (10 years to go): about $620,850 — roughly 61%

The discount collapses fast in your forties and fifties. That asymmetry is the whole reason Coast FIRE works as a strategy: front-load the saving while compounding still has decades to do the heavy lifting, then stop contributing and let time finish the job.

One number decides everything above: the real return you assume. This calculator subtracts inflation from your investment return (7% minus 2.5% gives 4.5%), which is the common convention in consumer FIRE tools — the more precise Fisher method divides instead and lands slightly lower. Over 30 years that gap compounds into a real difference, so it is worth understanding which convention you are looking at when comparing calculators — we explain it in real vs nominal returns, and cover how to pick a defensible rate in what return rate to use in FIRE projections.

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