Debt in retirement: which kinds are fine

Advice about retiring debt-free is common and slightly too simple. What matters is the rate, whether the balance is shrinking, and what you have to withdraw — and be taxed on — in order to make the payments.

The three questions

  1. What is the rate? Debt below your expected portfolio return is not obviously worth clearing; debt well above it always is. Consumer credit at high rates is in a different category from a mortgage.
  2. Does it amortise? A mortgage shrinks with every payment and eventually ends. A line of credit or a card balance can persist indefinitely, and minimum payments barely touch the principal.
  3. What does servicing it force you to withdraw? This is the retirement-specific question, and the one most easily missed.

That multiplier is why the same debt is meaningfully more expensive in retirement than it was during a working life, when payments came from salary that was being earned anyway.

The benefit interaction

Larger withdrawals mean higher taxable income, which can trip the OAS recovery threshold or reduce income-tested benefits. For a household near a clawback boundary the effective cost of servicing debt from a registered account includes the benefit it displaces.

That effect is at its most severe near GIS, where each extra dollar of income reduces the benefit by 50%. A retiree in that range funding debt payments from an RRSP is paying the interest, the income tax, and the lost benefit — three costs on one payment.

Why Ellen’s position is the sharp case

Ellen — 67, Nova Scotia, already retired on a modest income. Her CPP and OAS do most of the work and a small RRSP sits behind them.

Ellen’s income is $32,000 a year, including $4,618 of GIS, and her whole plan ends at $98,654. Her margin is thin, and every extra dollar of taxable income she generates costs her part of a benefit as well as tax.

Ellen's $32,000 of income includes $4,618 of GIS, which reduces by 50% of any additional income — so funding debt payments from a registered account costs her interest, tax and lost benefit at once.
A modest income with a benefit attached to it. Extra withdrawals are expensive here.

For a household in Ellen’s position, clearing debt before retiring — or servicing it from a TFSA, which is invisible to the benefit test — matters far more than the interest rate comparison would suggest. The rate is not what makes it expensive.

The kinds that are genuinely fine

A modest amortising mortgage at a low fixed rate, serviced from income the household already receives, on a plan with margin. That is a shrinking obligation with a known end date, and clearing it early by liquidating investments can easily cost more than carrying it.

The kinds that are not: revolving balances at high rates, anything variable-rate on a plan with no slack, and any debt whose payments require withdrawals that trip a clawback. Those compound against a household that has lost its ability to earn more.

The liabilities section carries each debt with its rate and amortisation, so the projection shows the payments as part of required income — including the extra withdrawals and tax they force.

Model the debt in your plan

Next: rental property inside a retirement plan.

GlidePathEngine is an educational planning tool — not financial, investment, tax, or legal advice.