New Brunswick combines for about 26.4% on ordinary income up to roughly $104,666, then jumps to about 36.5% above that line — the gentlest Atlantic curve in this pack. At $60,000 you keep roughly 73.6% of GIC interest after tax versus about 62.8% for a Nova Scotia resident at the same nominal income in our parallel illustration. A TFSA still wins outright because coupons stay at 100% when room allows. UNI Financial Cooperation anchors the province's francophone co-operative network, while Advance Savings Credit Union serves many anglophone communities.
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 | 26.40% | $3,247 | $9,053 | 3.32% effective |
| $90,000 | 26.40% | $3,247 | $9,053 | 3.32% effective |
| $120,000 | 36.50% | $4,490 | $7,810 | 2.86% effective |
| $150,000 | 36.50% | $4,490 | $7,810 | 2.86% effective |
New Brunswick's 26.4% rate below ~$105,000 is the lowest of any Atlantic province in this table — so non-registered GICs retain more coupon dollars here than in NS, PEI, or NL at the same income.
New Brunswick blends bilingual service models: UNI Financial Cooperation leads francophone caisses, while Advance Savings Credit Union supports many anglophone markets. NBCUDIC guarantees qualifying credit union deposits under provincial rules distinct from CDIC bank insurance. Big Six banks operate province-wide, and EQ Bank-style digital issuers post competitive ladders for rate-sensitive savers who do not need in-branch cash handling.
GIC interest in a non-registered account is taxed as ordinary income at your combined federal and New Brunswick marginal rate — about 26.4% up to roughly $104,666 and about 36.5% above that in these illustrations, the lowest Atlantic combined schedule shown here.
UNI Financial Cooperation (formerly Mouvement des caisses populaires acadiennes) is Atlantic Canada's largest credit union, focused on francophone New Brunswick; it posts competitive term deposits with NBCUDIC protection — compare its ladder with online bank specials weekly.
If you have TFSA room, yes: even at New Brunswick's low 26.4% combined rate, a TFSA can deliver roughly 36% more after-tax return than the same non-registered GIC in this simplified comparison (100% vs 73.6% of interest retained).
New Brunswick credit union deposits are insured by NBCUDIC with provincial coverage that differs from CDIC's $100,000 per insured category model — confirm eligible products with your caisse.
In these illustrations, New Brunswick's 26.4% combined rate below $105,000 is the lowest in Atlantic Canada, so non-registered GIC coupons shrink less than in Nova Scotia, PEI, or Newfoundland at similar earned income — TFSA and RRSP still win on a pure tax-arbitrage basis when room exists.
Educational estimates only. Not financial advice.