After-Tax Yield Calculator for Mortgage Investments in Canada

This calculator estimates the after-tax return on a mortgage investment in Canada for one year: what is left after fees and personal income tax, in dollars and as a percentage. It is built for investors comparing a MIC or other mortgage investment against alternatives, or deciding which account to hold it in.

This is general education, not investment, tax or legal advice. Tax information is as at October 2026; confirm your own position with a Canadian tax professional. Results are illustrative only. Mortgage investments are not guaranteed. Returns are targets, not promises, and principal can be lost. Higher yields come with higher risk.

How the after-tax yield calculator works

The calculator takes five inputs and applies the tax treatment of MIC dividends to them. Enter:

• Amount invested — in dollars.
• Gross yield (%) — what the investment earns before fees. If the offering quotes a net distribution rate that is already after fees, enter that rate here and set fees to zero.
• Total fees (%) — management and administration fees and fund expenses deducted before you are paid, as a percentage of the amount invested.
• Marginal tax rate (%) — your combined federal and provincial rate on your next dollar of income.
• Account type — non-registered, RRSP or RRIF, or TFSA.

Assumptions applied on screen: the whole distribution is taxed as interest income; the period is one year; there are no losses beyond what the fees input captures; and distributions are not reinvested.

The method, step by step

The arithmetic follows the path from gross to net to after-tax, explained fully in gross yield, net yield and after-tax yield.

1. Net yield = gross yield − total fees.
2. Net income = amount invested × net yield.
3. Tax in the year:
   • Non-registered: net income × marginal tax rate.
   • RRSP or RRIF: $0 in the year; the income is taxed when withdrawn.
   • TFSA: $0; income is generally not taxed.
4. After-tax income = net income − tax.
5. After-tax yield = after-tax income ÷ amount invested.

For a non-registered account the steps collapse into one line: after-tax yield = (gross yield − fees) × (1 − marginal rate).

After-tax return on a mortgage investment in Canada: a worked example

Running one example by hand shows what the calculator does and how much the account type matters.

Worked example (illustrative)

Inputs, all assumed for clear arithmetic: $50,000 invested, 9.5% gross yield, 1.5% total fees, 35% marginal tax rate.

• Net yield: 9.5% − 1.5% = 8.0%.
• Net income: $50,000 × 8.0% = $4,000.
• Non-registered: tax $4,000 × 35% = $1,400; after-tax income $4,000 − $1,400 = $2,600; after-tax yield $2,600 ÷ $50,000 = 5.2%.
• RRSP or RRIF: $4,000 stays in the plan, 8.0% in the year; tax is paid when the money is withdrawn.
• TFSA: $4,000 stays in the plan, 8.0%, generally not taxed.

The double-counting trap: suppose the offering quotes an 8.0% net distribution rate and you enter 8.0% as gross yield and 1.5% as fees anyway. The calculator would show net income of $50,000 × 6.5% = $3,250 instead of $4,000, understating the result by $750 before tax.

How are MIC dividends taxed?

MIC dividends are taxed as interest income (terms are defined in the mortgage investment glossary). Subsection 130.1(2) of the Income Tax Act deems a taxable dividend from a MIC (other than a capital gains dividend) to be received by the shareholder as interest on a bond issued by the corporation. The practical effects for mortgage investment tax treatment in Canada:

• Taxed at the investor’s marginal rate in a non-registered account.
• No dividend gross-up or tax credit.
• Reported on a T5 slip.
• A portion designated as a capital gains dividend, if any, is treated differently; the calculator does not model it.

Interest from a direct or syndicated mortgage is also taxed as interest income. More detail is in how mortgage investment income is taxed in Canada, and account-specific rules are in holding mortgage investments in an RRSP, TFSA or RRIF.

Where to find each input

Each input comes from a specific document or source.

• Gross yield and fees — the offering memorandum’s fees and expenses section, and the management fees and expenses in the audited financial statements.
• Net distribution rate — the issuer’s distribution history, with the periods stated. Past performance does not indicate future results.
• Marginal tax rate — federal rates from the Canada Revenue Agency and your province’s published rates, or a Canadian tax professional.
• Flat-dollar fees — convert to a percentage by dividing by the amount invested; an assumed $200 plan trustee fee on $50,000 is 0.4%.

What the calculator does not capture

The result is a one-year illustration on the assumptions above, not a forecast. It leaves out:

• Loan losses beyond the fees entered. Distributions are not guaranteed and may be reduced or suspended, and principal can be lost.
• Liquidity. Redemptions from a MIC follow its articles and offering memorandum, with notice periods and the board’s right to defer or suspend.
• Deferred tax. RRSP and RRIF withdrawals are taxed later at the rate that applies then.
• Prohibited-investment penalties. If you and non-arm’s-length persons hold 10% or more of any class of a MIC’s shares, it can become a prohibited investment under section 207.01 of the Income Tax Act.
• Income-tested benefits and credits that additional interest income can affect.
• Deposit insurance. If you compare the result with a GIC, note that GIC interest is also taxed as interest, but a GIC is a deposit that can be CDIC-insured up to $100,000 per insured category, while MIC shares carry no CDIC or provincial deposit insurance. See mortgage investing vs GICs.
• Compounding. Reinvested distributions are modelled in the DRIP compounding calculator.

What this means for a mortgage investor

The after-tax return is the number an investor actually spends, and for MIC dividends it is the net yield reduced by the marginal tax rate unless a registered plan defers or removes the tax. The calculator makes that arithmetic quick; the inputs still need to come from the offering’s documents and your own tax position. The yield being taxed is itself shaped by the seven axes on which mortgage investments vary: the borrower, the property, the loan-to-value, the security position, the term, the jurisdiction and the investment structure.