What inflation does to a workplace pension that isn't indexed

A workplace pension that pays $2,000 a month at 65 will often still pay $2,000 a month at 85. On the statement nothing has changed. At the grocery store, a great deal has. Many private-sector defined benefit pensions and most level annuities are not indexed to inflation, or are indexed only in part, and the effect builds slowly enough to be easy to miss.

This sheet measures that effect at two inflation rates, sets it against the indexed public pensions, and looks at what it means for the shape of retirement income.

A level cheque in a rising world

An unindexed pension promises a fixed number of dollars. What those dollars buy falls by the rate of inflation each year, and the fall compounds, just as indexation does in the other direction. At 2% a year, prices roughly double in about 35 years. At 3%, in about 23. A retirement that starts at 65 can easily run 20 to 30 years.

The working: 10, 15 and 20 years

Here is the buying power of a level $2,000 a month, expressed in the dollars of the first year, at two steady inflation rates. Two per cent is the midpoint of the Bank of Canada’s inflation-control target; three per cent is a plainly higher assumption for comparison.

At 2%, a third of the pension’s buying power is gone after twenty years. At 3%, nearly half. The nominal amount on the deposit never moves, which is precisely why the change is hard to see from one year to the next.

The decade just gone

Steady rates are an abstraction. A real decade is lumpier. Using the CPP’s own January indexation rates as the measure of price change from 2017 to 2026 (which compound to 29.5%, as worked in what twenty years of indexation does to a CPP pension), a level $2,000 pension in 2016 would by 2026 buy what about $1,544 bought in 2016. A loss of 22.8% in ten years, most of it in 2022 to 2024, when the indexation rates were 2.7%, 6.5% and 4.4%.

That is the practical risk of an unindexed income: not the average, but a run of high-inflation years that permanently lowers the base, with no catch-up afterwards.

Partial indexation

Some plans index part of the way, for example by a fraction of the CPI change, or up to a cap, or only when the plan can afford it. Partial indexation narrows the gap without closing it. If a plan indexed at half of a steady 2% inflation:

Set beside CPP and OAS

The public pensions are built differently. CPP benefits in pay are adjusted every January by the change in the Consumer Price Index; for 2026 the increase was 2.0%. Old Age Security is reviewed four times a year, in January, April, July and October, and the Government of Canada states that OAS amounts do not decrease if the cost of living falls. Both are designed to hold their buying power rather than their dollar amount.

That makes the public pensions the inflation-protected layer of most Canadians’ retirement income, and it changes how a fixed workplace pension should be read. A household with $2,000 from an unindexed plan and $1,500 from CPP and OAS combined starts with 57% of its income fixed. Twenty years later at 2% inflation, the fixed part is worth about $1,346 in first-year dollars while the indexed part is still worth about $1,500, so the indexed share of real income has risen from 43% to about 53%.

What it means for planning

• Spending power is front-loaded. An unindexed pension buys most in the first years. Budgets that assume a constant real income will drift.
• Savings may need to fill a widening gap. RRIF withdrawals and TFSA savings are the usual tools; see why RRIF minimum withdrawals rise every year and TFSA or RRSP after 65.
• Indexed income is worth more than its face value. This is part of the reason the CPP start age gets so much attention: a pension that is permanently larger and fully indexed protects against exactly the erosion shown above.
• Survivor benefits follow the same rule. If the plan’s pension is level, a joint-and-survivor pension generally is too.

Who this matters for, and what to check

• Anyone receiving, or about to receive, a defined benefit pension from a private employer, or a level annuity.
• Check the plan booklet or annual statement for the words “indexation”, “cost-of-living adjustment” or “escalation”, and whether any increase is guaranteed or discretionary.
• Look at how much of total household income is fixed in dollars, and how much is indexed.
• For the effect of rising income on income-tested benefits, see why one extra dollar of income can matter when you receive GIS.

The short version

An unindexed pension keeps its number and loses its value: about a third of its buying power over twenty years at 2% inflation, nearly half at 3%. Partial indexation slows the loss; only full indexation stops it. CPP and OAS are indexed by design, which makes them the part of retirement income that holds its ground, and the fixed part the one to watch.