Why incorporated professionals over 40 are leaving significant retirement capital on the table — and how the IPP closes that gap permanently.
An Individual Pension Plan (IPP) is a defined benefit pension plan registered with the CRA, set up by your corporation for your benefit as the owner-employee. Unlike an RRSP — which you fund personally with after-corporate-tax dollars — an IPP is funded by your corporation with fully deductible pre-tax dollars.
The IPP is governed by the same rules as large corporate pension plans, but structured for a single individual. Your corporation acts as the plan sponsor. You are the plan member. A third-party actuary determines the allowable contributions each year — and those contributions are almost always significantly larger than your RRSP room, particularly once you are past age 40.
Think of the IPP as your corporation building you a private pension — with the same tax advantages as a Fortune 500 company pension, structured entirely around your retirement date, your income history, and your T4 earnings.
The RRSP contribution limit is capped at 18% of earned income, up to a maximum ($32,490 in 2025). The IPP has no such hard cap — contributions are actuarially determined to fund a defined benefit of 2% of your best average T4 earnings per year of service. As you age, the actuarial cost of funding that benefit increases dramatically, which is why IPP contribution room grows well beyond RRSP limits.
The table below illustrates approximate annual IPP vs. RRSP contribution room for an incorporated professional earning $200,000 in T4 income:
| Age | RRSP Limit (2025) | Approx. IPP Contribution | IPP Advantage / Year | Cumulative Advantage |
|---|---|---|---|---|
| 40 | $32,490 | $38,000 | +$5,510 | $5,510 |
| 45 | $32,490 | $44,500 | +$12,010 | $87,500 |
| 50 | $32,490 | $53,200 | +$20,710 | $218,000 |
| 55 | $32,490 | $64,800 | +$32,310 | $430,000 |
| 60 | $32,490 | $80,500 | +$48,010 | $740,000 |
| 65 (retirement) | $32,490 | $102,000 | +$69,510 | $1,150,000+ |
Approximate figures for illustration purposes. Actual IPP contributions are determined by a qualified actuary based on your specific age, T4 history, plan design, and CRA rules. RRSP limit shown is 2025 maximum.
IPP contributions are calculated by a registered actuary using a defined benefit formula. Here is a simplified example of how the annual contribution is determined for a 52-year-old incorporated professional with 20 years of T4 earnings history:
The IPP is designed to pay a defined benefit at retirement equal to 2% of your best average pensionable earnings × years of service. For a professional earning $200,000/year with 25 years of service, the target annual pension is: 2% × $200,000 × 25 = $100,000/year at retirement.
The actuary calculates the present value of funding that $100,000/year pension from your planned retirement age, factoring in your current age, mortality tables, and an assumed investment return (typically 7.5%). The older you are, the more it costs to fund the same benefit — which is why annual contributions escalate with age.
Your existing RRSP contributions partially offset IPP room. The actuary accounts for pension adjustments (PAs) from prior years and may require you to transfer a portion of your RRSP balance into the IPP at setup. This is a one-time event — and typically a tax-neutral transfer.
The resulting contribution amount is fully deductible to your corporation. At a 26.5% corporate tax rate, a $55,000 IPP contribution generates roughly $14,575 in immediate tax savings at the corporate level — on top of the tax-sheltered compounding inside the plan.
Two features make the IPP uniquely powerful compared to any other registered plan in Canada: the ability to make past service contributions and the terminal funding top-up at retirement.
When you first set up an IPP, your actuary can calculate contributions going back to 1991 (or the date of incorporation, whichever is later) — based on your historical T4 income. If the plan is underfunded relative to the defined benefit formula for those years, your corporation can make a lump-sum past service contribution to fund the shortfall. This can result in an immediate six-figure corporate deduction in year one of the plan. The maximum past service contribution for any one year of past service is capped by CRA limits, but the cumulative effect over a long T4 history can be very significant.
At the point of retirement, if the IPP assets are insufficient to fund the full defined benefit (which is common, as life expectancy assumptions are conservative), your corporation is required to make a top-up contribution — called terminal funding. This top-up is fully deductible to the corporation and is calculated by the actuary at retirement. For many business owners, this final contribution is one of the largest single deductions their corporation will ever take — often $200,000 to $500,000+ depending on age and plan history.
Unlike an RRSP, which has limited creditor protection in most provinces, assets held inside an IPP are fully protected from creditors under pension legislation. For business owners with personal guarantees, operating risk, or professional liability exposure, this protection is a material benefit that the RRSP simply cannot match.
The IPP can hold the same investment universe as an RRSP — GICs, mutual funds, ETFs, stocks, bonds — and in some structures, certain alternative assets. The plan trustee (often the business owner) controls the investment mandate within the CRA’s rules for registered pension plans.
T4 income of $220,000/year · Incorporated since 2005 · IPP established 2026
* Sample illustration only. Actual contributions determined by a qualified actuary. Results depend on T4 history, actuarial assumptions, plan design, and CRA rules. Not a guarantee of future performance.
The IPP is not for everyone. It requires T4 employment income from a corporation, an actuarial setup cost, and ongoing plan administration. Here is who it is ideal for — and who it is not suited for.
The RRSP is familiar and flexible. The IPP is more powerful — but more structured. Here is a direct comparison across the dimensions that matter most to incorporated business owners:
| Factor | RRSP | IPP |
|---|---|---|
| Who funds it | You personally (after-corporate-tax dollars) | Your corporation (pre-tax, fully deductible) |
| Annual contribution limit | 18% of earned income, max $32,490 (2025) | Actuarially determined — grows significantly with age; often 2× RRSP at 50+ |
| Past service contributions | None | Yes — can fund back to 1991 based on T4 history |
| Terminal funding top-up | None | Yes — large deductible corporate contribution at retirement |
| Creditor protection | Limited — varies by province | Full protection under pension legislation |
| Investment flexibility | Very flexible — any qualifying investment | Flexible — same universe, trustee-managed |
| Annual admin cost | None (self-directed) | ~$2,000–$4,000/yr (actuarial + admin) |
| T4 income required | No — any earned income qualifies | Yes — must have T4 income from the sponsoring corporation |
| Spousal contributions | Yes — spousal RRSP available | Spouse can be added as a plan member in some structures |
| Best age to start | As early as possible | Age 40+ (advantage accelerates each year) |
| Overall advantage at 50+ | Familiar, flexible, simple | More contribution room, bigger deductions, better protection |
Most incorporated professionals over 40 are significantly under-contributing to their retirement. A 15-minute call with our team will show you exactly how much additional deductible room an IPP could unlock for your corporation — with real numbers.