What is CPP pension sharing?

CPP pension sharing (also called pension assignment) allows spouses or common-law partners to share their CPP retirement pension income for tax purposes. Each person applies to have a portion of their CPP attributed to the other. This is different from CPP credit splitting after separation.

Is CPP pension sharing the same as pension income splitting?

No. CPP pension sharing is a formal arrangement through Service Canada where the actual CPP amounts are reassigned between spouses. Pension income splitting (under the Income Tax Act) lets you split eligible pension income on your tax return without changing the underlying payment. RRIF withdrawals and annuities qualify for income splitting; CPP uses the pension sharing route instead.

How much CPP can be shared between spouses?

The shareable amount is based on the number of months you lived together during each person's contributory period. The formula results in up to 50% of each spouse's CPP being shareable — but the actual amount depends on the overlap period. In most long-term marriages, close to 50% of each pension is shareable.

Do you both have to be receiving CPP to share it?

No. Only one spouse needs to be receiving CPP. However, the receiving spouse must be at least 60 and the sharing spouse must also be at least 60 (or be receiving CPP already). If only one partner is receiving CPP, only their pension is shared — the other partner has nothing to share back.

How do you apply for CPP pension sharing?

Both spouses must complete Service Canada Form ISP1002 (Assignment of Canada Pension Plan Retirement Pension). Both signatures are required. Submit the form by mail to Service Canada or through My Service Canada Account. The sharing begins the month after Service Canada approves the application.

CPP Pension Sharing Between Spouses: How It Works and When It Saves Tax (2026)

CPP pension sharing (formally called Assignment of Retirement Pension) lets you and your spouse or common-law partner share the CPP retirement pensions you each receive. A portion of the higher earner’s CPP is redirected to the lower-income partner, reducing the higher earner’s taxable income and potentially lowering your combined tax bill.

This is not the same as:

CPP credit splitting (done upon separation — divides the credits earned during cohabitation, not the retirement pension payments)
Pension income splitting (a T1 return election for RRIF/annuity income under the Income Tax Act)

CPP pension sharing is an administrative arrangement with Service Canada. The actual CPP payments are reassigned.

Who Qualifies

To share CPP pensions, both of the following must be true:

Both spouses or common-law partners must be at least 60 years old (or already receiving CPP)
Both must currently be living together (cannot be separated or divorced)
At least one must be receiving CPP retirement pension

There is no income test. Any couple where both partners are 60+ can apply.

How the Shareable Amount Is Calculated

The amount that can be shared is based on the overlapping cohabitation period relative to each person’s total contributory period.

The Formula

For the higher-earning spouse: $$\text{Shareable portion} = \text{Your CPP} \times \frac{\text{Months together during contributory period}}{\text{Your total contributory months}}$$

The same formula applies to the lower-earning spouse’s CPP (if they are also receiving CPP).

Worked Example

Peter: CPP = $1,100/month. Contributory period: 480 months (age 18–58). Together with Maria for 420 of those months.
Shareable portion from Peter: $1,100 × (420 ÷ 480) = $962.50/month
Up to 50% of this shareable amount can be assigned: $481.25/month
Maria: CPP = $450/month. Contributory period: 480 months. Together with Peter for 420 of those months.
Shareable portion from Maria: $450 × (420 ÷ 480) = $393.75/month
Up to 50% of her shareable amount: $196.88/month

Net result after sharing:

	Before Sharing	After Sharing
Peter’s CPP	$1,100	$1,100 − $481.25 + $196.88 = $815.63
Maria’s CPP	$450	$450 − $196.88 + $481.25 = $734.37
Combined total	$1,550	$1,550 (unchanged)

The combined CPP stays the same. Only the distribution between spouses changes.

Tax Savings: Why It Matters

With a progressive tax system, shifting income from a higher-bracket spouse to a lower-bracket spouse reduces combined tax.

Ontario Tax Example (2026)

Before sharing:

Peter: $1,100/month CPP = $13,200/year — taxed at his marginal rate (assume 33.5% combined federal/provincial)
Maria: $450/month CPP = $5,400/year — taxed at her rate (assume 20.5%)

After sharing:

Peter: $815.63/month = $9,788/year — reduced taxable CPP
Maria: $734.37/month = $8,812/year — increased taxable CPP

Tax savings estimate:

Peter saves: ($13,200 − $9,788) × 33.5% ≈ $1,143
Maria’s extra tax: ($8,812 − $5,400) × 20.5% ≈ $699
Net combined savings: ~$444/year

Savings are larger when the marginal rate gap between spouses is wider.

How to Apply

Both spouses must apply jointly using Form ISP1002.

Step-by-Step

Download Form ISP1002 (Assignment of Canada Pension Plan Retirement Pension) from canada.ca
Both partners complete and sign the form
Submit to Service Canada by:
- Mailing to the Service Canada CPP office
- Submitting through My Service Canada Account (online)
Service Canada reviews and approves (typically 4–8 weeks)
Sharing begins the month after the approval date

What You’ll Need

Both partners’ Social Insurance Numbers
Both partners’ dates of birth
Confirmation of relationship (marriage certificate or statutory declaration for common-law)
Banking information if payment addresses differ

You can cancel or revoke pension sharing at any time:

Either partner can request cancellation by contacting Service Canada
The sharing automatically stops if you separate or your relationship ends
If one partner dies, the sharing ends automatically and the survivor’s CPP reverts to the individual calculation

Feature	CPP Pension Sharing	Pension Income Splitting
Applies to	CPP retirement pension	RRIF, life annuity, registered pension
How it works	Service Canada reassigns actual payments	T1 return election — no payment change
Both must apply	Yes	No — only the higher earner elects
Retroactive	No	Yes, annually on T1
Form required	ISP1002	T1032
Can do both	Yes — they are independent	Yes

For maximum income splitting in retirement, couples often use both strategies: CPP pension sharing + pension income splitting for RRIF withdrawals.