Quebec residents face the highest combined marginal tax rates in Canada — about 47.46% at $150,000 in this illustration. Non-registered GIC interest is therefore extremely expensive: roughly $12,300 of coupon taxed near 47% leaves about $6,519 after tax, while the same cash flow inside a TFSA stays at $12,300, subject to contribution room and CRA rules. Desjardins — North America's largest federation of credit unions — also competes aggressively on term deposits with AMF oversight.
Interest is taxed annually at your marginal rate (simplified).
Term
Compare terms at the same rate
Uses your principal, rate, and compounding choice for each term length.
| Term | Maturity | Interest | After-tax total |
|---|---|---|---|
| 1yr | $10,450.00 | $450.00 | $10,315.00 |
| 2yr | $10,920.25 | $920.25 | $10,644.18 |
| 3yr | $11,411.66 | $1,411.66 | $10,988.16 |
| 4yr | $11,925.19 | $1,925.19 | $11,347.63 |
| 5yr | $12,461.82 | $2,461.82 | $11,723.27 |
Maturity value
$11,411.66
Principal vs interest
Educational estimates only. Institutions may compound differently, apply minimums, or use day-count conventions not modeled here. Not financial advice.
Illustration: $50,000 principal, 5-year GIC at 4.5%, ~$12,300 total simple interest; tax applied once on total interest at stated combined marginal rate (simplified).
| Annual Income | Combined Rate | Tax on interest | After-tax interest | After-tax return |
|---|---|---|---|---|
| $60,000 | 30.69% | $3,775 | $8,525 | 3.12% effective |
| $90,000 | 36.12% | $4,443 | $7,857 | 2.88% effective |
| $120,000 | 41.12% | $5,058 | $7,242 | 2.65% effective |
| $150,000 | 47.46% | $5,838 | $6,462 | 2.37% effective |
At $150,000 income, a non-registered GIC in Quebec retains only about 52.5% of interest — the lowest of any province in this table. A TFSA GIC retains 100%.
Quebec's market blends Desjardins — over seven million members — with Big Six banks and online challengers. Desjardins term deposits (dépôts à terme) frequently anchor retail rate boards, while EQ Bank and similar digital banks serve Quebec residents with competitive posted yields on CDIC-eligible deposits. Compare caisse specials, bank branch ladders, and online promos before locking in; always verify insurance membership and limits.
GIC interest earned in a non-registered account is taxed as ordinary income at your combined federal and Quebec marginal rate — about 30.69% at $60,000 rising to about 47.46% at $150,000 in these illustrations — the highest combined rates in Canada.
Desjardins dépôts à terme are fixed-rate, fixed-term deposits that behave like bank GICs: principal protection and a stated coupon. Deposit insurance for caisses differs from CDIC bank rules — confirm coverage with your caisse populaire.
Strongly consider it when you have room: at $150,000 combined marginal rate you keep 100% of GIC interest in a TFSA versus about 52.5% after tax in a non-registered account in this simplified model — the largest TFSA advantage in the country.
Desjardins and other Quebec caisses participate in AMF-regulated deposit insurance with parameters that differ from CDIC's $100,000 per category model at banks — review the current AMF deposit insurance guide before placing large balances.
Quebec's Charter of the French Language requires French documentation from many institutions; major banks and Desjardins typically offer bilingual contracts and servicing. Always read the disclosure that matches the language you rely on.
Educational estimates only. Not financial advice.