Decumulation Strategy in Ontario: How to Draw Down Your Assets in Retirement

For most of your working life, the financial objective is straightforward: save more. Contribute to your RRSP, build your TFSA, pay down debt, invest the surplus. But the moment you retire, that equation inverts. Now the question is not how to accumulate — it is how to draw down. This phase, called decumulation, is arguably more complex than accumulation, and far fewer Ontarians have a real plan for it.

What Is Decumulation and Why Does It Matter?

Decumulation is the process of systematically converting your accumulated assets — RRSPs, RRIFs, TFSAs, non-registered accounts, pensions, CPP, OAS — into reliable retirement income. The goal is to sustain your lifestyle across a retirement that could last 25 to 35 years, minimize taxes paid over that period, and leave whatever legacy you want to leave behind.

Without a deliberate strategy, most retirees default to drawing from whatever account feels most accessible or obvious. That approach can result in unnecessarily high lifetime tax bills, loss of OAS through clawback, premature depletion of tax-sheltered accounts, or leaving money in the wrong places at the wrong time.

A well-constructed decumulation strategy does more than just tell you which account to draw from first. It coordinates income sources, manages tax brackets, protects government benefits, and adapts to life changes over decades.

Understanding Your Income Sources in Ontario Retirement

Before designing a drawdown sequence, you need a clear picture of what you are working with. Most Ontario retirees have some combination of the following:

Registered accounts (RRSP/RRIF): Fully taxable on withdrawal. Subject to mandatory minimum withdrawals starting the year after conversion to a RRIF, which must occur by December 31 of the year you turn 71. Withdrawals are counted as income for OAS clawback purposes.

Tax-Free Savings Account (TFSA): Withdrawals are completely tax-free and do not affect income-tested benefits like OAS or GIS. Contribution room is restored the following calendar year. This makes the TFSA an extraordinarily flexible tool in retirement.

Non-registered accounts: Only 50% of capital gains are taxable (at your marginal rate), and eligible Canadian dividends receive favourable tax treatment. Interest income is fully taxable. The tax treatment depends entirely on what you hold and when you sell.

CPP and OAS: Government benefits that provide inflation-indexed, guaranteed income. The timing of when you start these significantly affects lifetime income. CPP can start between age 60 and 70; OAS between 65 and 70.

Defined benefit pension (if applicable): Provides fixed monthly income, often with survivor options and indexing. This anchors your income floor and affects how aggressively you need to draw from other accounts.

The Core Question: Which Account Do You Draw From First?

There is no single right answer — it depends heavily on your marginal tax rate, the size of each account, your age, and your goals. However, there are some general principles that guide most Ontario decumulation plans.

In lower-income years, draw from the RRSP/RRIF first. If you retire before CPP and OAS begin, your taxable income may be temporarily low. This is often the best window to draw down registered accounts, filling lower tax brackets at rates that will never be available again once all government income sources kick in.

Use the TFSA as a tax pressure valve. When a large one-time expense hits — a home renovation, a health emergency, a major trip — the TFSA can cover it without affecting your taxable income. This is also valuable for topping up income in a given year without pushing into a higher bracket.

Defer non-registered capital gains when possible. Unless you need the funds, unrealized gains in a non-registered account may be worth holding. Upon death, however, there is a deemed disposition — so this must be weighed against estate planning objectives.

OAS Clawback and the RRIF Trap

One of the most overlooked risks in Ontario retirement planning is OAS clawback. Once your net income exceeds the threshold (approximately $90,997 in 2025, adjusted annually), your OAS benefit is reduced by 15 cents for every dollar above that threshold. At around $148,000 of income, your OAS is fully eliminated.

Mandatory RRIF withdrawals can push high-balance retirees straight into clawback territory. If you have a $1.2 million RRIF at age 75, the mandatory minimum withdrawal alone may exceed $70,000. Add CPP and OAS on top of that, and clawback becomes a real tax problem.

This is a key reason why proactive RRIF drawdown in the early retirement years — before CPP and OAS begin — often makes excellent tax sense for retirees with large registered balances.

Pension Income Splitting

Ontario couples with one spouse receiving eligible pension income (including RRIF income once converted) can allocate up to 50% of that income to the lower-earning spouse for tax purposes. This can significantly reduce the household's combined tax bill, especially where there is a meaningful income gap between spouses.

Pension income splitting is not automatic. It must be claimed each year on your tax return, and the strategy should be revisited annually as income levels and bracket positions change.

Building a Decumulation Plan That Lasts

A robust decumulation plan typically addresses: annual income targets and how they will be met, the optimal starting age for CPP and OAS given health and longevity, the drawdown sequence across account types, tax bracket management in each phase of retirement, and a plan for large irregular expenses.

At Pineault Wealth Management in London, Ontario, Marc Pineault works with retirees and pre-retirees to build these plans — modelling income across multiple scenarios and identifying strategies that reduce lifetime tax, preserve benefits, and provide genuine income security for decades.

Decumulation is not a one-time decision. It is an ongoing strategy that needs to be reviewed and adjusted as tax rules change, markets move, and life evolves.

---

This article is for educational purposes only and does not constitute personalized financial advice. Please consult a qualified financial planner before making any financial decisions.