T4 Box 40 — Other taxable allowances and benefits
Total dollar value of non-cash taxable benefits your employer provided — company car, medical insurance, gift cards, stock options, etc. Already included in Box 14.
At a glance — Box 40
- Box name
- Other taxable allowances and benefits
- T1 line
- Not reported on T1 directly
- Check against
- Should equal the sum of all Other Information codes 30-42 below.
What Box 40 means
Box 40 reports the total taxable benefits your employer added to your income: company vehicle standby charge and operating benefit (code 34), private health insurance premiums (code 85 or specific codes), group term life insurance over $25k (code 40 or 31), board and lodging (code 30), employee loans (code 36), stock option benefits (code 38), gift cards over $500, and similar.
Crucially, Box 40 is informational — these benefits are already included in Box 14 (employment income). You do not add Box 40 separately when filing.
The detailed breakdown of Box 40 appears in the "Other Information" section of the T4 with specific two-digit codes (30-42 primarily).
Tax return implications
- No separate reporting needed — already in Box 14 and on Line 10100.
- Some items in Box 40 (e.g., stock option benefits, security-option deductions) may unlock a matching deduction on the T1.
FAQ
Do I add Box 40 to Box 14?
No. Box 40 is already included in Box 14. It is shown separately so you can see how much of your Box 14 comes from non-cash benefits.
Related T4 boxes
Box 42 — Employment commissions
Commission income portion of your Box 14 total — important if you want to claim commission-employee expenses on Form T2200/T777.
Box 44 — Union dues
Annual union or professional-association dues paid through payroll deduction — fully deductible from employment income.
Box 46 — Charitable donations
Charitable donations made through payroll deduction — claim them as part of your charitable donation tax credit.
Box 14 — Employment income
Your total gross employment income for the year before any deductions — salary, wages, bonuses, commissions, taxable benefits and most other pay.
Filing your return? Use the payroll deductions calculator to verify the amounts on your T4 match expected CPP, EI and income tax withholdings, and the income tax calculator to estimate your refund or balance owing.
Sources
T4 box definitions from CRA T4 employer guide. Rates and thresholds current for 2025; file your 2025 T1 by April 30, 2026 (self-employed June 15).