What Is Line 10100 on a Tax Return? (Employment Income Guide)

If you’ve ever stared at a Canadian tax return and wondered what goes into that blank space on line 10100, you’re not alone — it’s where most people report the bulk of their income, but small mistakes here can slow down your refund or trigger a CRA review. Getting this one line right is the foundation of a smooth filing.

Line Number: 10100 ·
Type of Income: Employment income (salary, wages, commissions, tips, bonuses, honoraria) ·
Source Document: T4 Slip, Box 14 ·
Common Error: Forgetting to include tips or foreign employment income

What is line 10100 used for?

Line 10100 is the official employment income line on the T1 General tax return. The Canada Revenue Agency (Canada’s federal tax authority) states that the amount from T4 Box 14 — “Employment income” — must be entered here. This line captures virtually all income you receive from an employer.

Definition of line 10100

• Salary and wages you earned as an employee (TurboTax Canada (tax preparation provider))
• Commissions, even if paid separately from base salary
• Tips and gratuities — a common omission that can trigger a review (Spring Financial (personal finance educator))
• Bonuses and honoraria
• Foreign employment income — must be included even if already taxed abroad (Canada Revenue Agency)

Income not reported on line 10100

• Self-employment income (goes on line 13500)
• Investment income (interest, dividends) – on lines 12100 and 12000
• Pension income – on line 11500
• Capital gains – on line 12700

The implication: line 10100 is purely about what you earned as an employee. Mixing in other income types is the most frequent error that causes CRA reassessments.

Is line 15000 the same as line 10100?

No. Line 15000 is total income — a broader figure that starts with line 10100 and adds all other income lines. Wealthsimple (a Canadian investment platform) explains that line 15000 is calculated by adding line 10100 to other amounts like investment, pension, and rental income. The distinction matters because many tax credits and phase-outs are based on line 15000, not line 10100.

Difference between line 10100 and line 15000

The pattern: line 10100 feeds into line 15000. If you overstate line 10100, you inflate total income; if you understate it, you miss the correct base for credits and contributions.

Why the distinction matters for tax calculations

Many personal tax amounts — like the Canada Child Benefit, GST/HST credit, and Old Age Security clawbacks — are based on total income (line 15000). So an error on line 10100 cascades. As FreshBooks Canada (accounting software for small businesses) notes, line 10100 is a subset of line 15000, not the same thing.

Where can I find line 10100 on tax return Canada?

On the T1 General form, line 10100 is located in the “Employment income” section — typically on the first or second page under Step 2. TurboTax Canada (a leading tax filing app) says it appears on page 2, while FreshBooks Canada places it on page 3 — likely a version difference in the form layout. The key is to look for “Employment income” near the top of the income section.

Corresponding box on T4 slip (Box 14)

On your T4 slip, Box 14 titled “Employment income” contains the exact amount to report on line 10100. Copilot Tax (a Canadian tax assistance service) notes that in some cases Box 71 lump-sum payments also feed into line 10100, though that’s less common.

Where to find if using tax software like TurboTax

• Enter your T4(s) in the software’s “Income” section.
• The software automatically maps Box 14 to line 10100.
• If you have multiple T4s, each Box 14 is summed — you don’t manually add them.

Is box 14 the same as line 10100?

Yes, for most taxpayers. Box 14 on the T4 slip is the employer-reported total employment earnings, and that amount goes directly onto line 10100. Tax Return Filers (Canadian tax filing service) confirms that the sum of all Box 14 amounts from every T4 slip equals the correct line 10100 figure.

What to do if amounts differ

If you have tips or gratuities that weren’t paid through payroll and thus not on a T4, you still must report them on line 10100. Similarly, foreign employment income received without a Canadian T4 should be added. TurboTax Canada warns that clergy members may need to subtract a housing allowance before entering Box 14 amount — a special case that requires a separate calculation.

What is line 10100 on your tax return in Canada?

Line 10100 is the starting point for most Canadians’ taxable income. It represents all employment earnings from every job you held during the tax year. Spring Financial describes it as “the line used to enter all employment income you earned throughout the year.”

Common mistakes when reporting

• Omitting tips: Cash tips or tips shared by employers not on T4 must still be reported.
• Mixing with self-employment: Freelance or gig work without a T4 goes elsewhere.
• Forgetting foreign income: If you worked outside Canada, the income is still reported here.

Example of line 10100 calculation

Jane worked two jobs in 2023: Job A (T4 Box 14: $35,000) and Job B (T4 Box 14: $22,000). She also earned $1,200 in unreported tips from a restaurant. Her line 10100 = $35,000 + $22,000 + $1,200 = $58,200. This sum then flows to line 15000 alongside any other income.

How to Calculate Line 10100 Step by Step

1. Gather all T4 slips from every employer for the tax year.
2. Locate Box 14 on each slip — the figure is your employment income from that job.
3. Add all Box 14 amounts together. If you had one employer, that’s your total.
4. Add tips or gratuities not recorded on a T4. Keep your own records.
5. Include foreign employment income received without a Canadian T4.
6. Enter the total on line 10100 of your T1 return. If using software, the program does this automatically when you import T4 data.
7. Double-check against line 15000 — if only employment income, line 10100 should equal line 15000. If you have other income, line 15000 will be larger.

The trade-off: getting step 4 and 5 incorrect — either forgetting them or adding income that doesn’t belong — is the source of most line 10100 errors. When in doubt, consult the CRA’s guide on T4 slips and employment income.

“Employment income consists of amounts that you receive as salary, wages, commissions, tips, bonuses, honoraria, and gratuities.”

Canada Revenue Agency

“If you are looking for Line 10100 (formerly Line 101) on your tax return you are looking for your employment income.”

TurboTax Canada (tax software guide)

For the average Canadian employee, line 10100 is straightforward: it’s your T4 Box 14 total. But for anyone with tips, foreign income, or a clergy allowance, the risks of under‑ or over‑reporting are real. The CRA matches T4 data automatically, and even a minor discrepancy can trigger a letter. For the employee with multiple gigs or overseas work, the choice is clear: review every income source, add it correctly, or risk a delayed refund and unnecessary scrutiny.