openaccountants Canada T1 General Individual Return -- Self-Employed Skill v2.0
General reference only. This skill is general tax/accounting reference material for AI-assisted workflows. It has not been reviewed for any specific person's facts, documents, elections, deadlines, residency, filing status, or local procedures. Do not rely on it to file, pay, amend, or take a tax position without review by a qualified professional in the relevant jurisdiction.
Section 1 -- Quick Reference
| Field | Value |
|---|---|
| Country | Canada -- Federal |
| Tax | Federal income tax + CPP/CPP2 self-employed |
| Currency | CAD only |
| Tax year | Calendar year |
| Primary legislation | Income Tax Act (ITA), R.S.C. 1985, c. 1 (5th Supp.) |
| Supporting legislation | Canada Pension Plan Act; Employment Insurance Act |
| Tax authority | Canada Revenue Agency (CRA) |
| Filing portal | CRA My Account / NETFILE / EFILE |
| Form | T1 General + Schedule 1 (Federal Tax) + Schedule 8 (CPP) |
| Filing deadline | June 15 (self-employed); payment due April 30 |
| Contributor | Open Accountants Community |
| Validated by | Pending -- Canadian CPA sign-off required |
| Skill version | 2.0 |
Federal Tax Brackets (2025)
| Taxable Income (CAD) | Rate | Cumulative Tax |
|---|---|---|
| 0 -- 57,375 | 14.5%* | 8,319 |
| 57,376 -- 114,750 | 20.5% | 20,081 |
| 114,751 -- 177,882 | 26% | 36,495 |
| 177,883 -- 253,414 | 29% | 58,399 |
| 253,415+ | 33% | 58,399+ |
*14.5% is a blended rate for 2025 (15% Jan-Jun, 14% Jul-Dec).
Basic Personal Amount (2025)
| Net Income | BPA |
|---|---|
| $177,882 or less | $16,129 |
| $177,882 -- $253,414 | Graduated reduction |
| $253,414+ | $14,538 |
CPP Self-Employed (2025)
| Item | Value |
|---|---|
| CPP rate (both portions) | 11.9% |
| CPP2 rate (both portions) | 8.0% |
| First ceiling (YMPE) | $71,300 |
| Second ceiling (YAMPE) | $81,200 |
| Basic exemption | $3,500 |
| Max CPP contribution | $8,068.20 |
| Max CPP2 contribution | $792.00 |
Half of CPP/CPP2 is deductible (line 22200); half is a non-refundable credit.
Conservative Defaults
| Ambiguity | Default |
|---|---|
| Unknown province | STOP -- province required |
| Unknown RRSP room | $0 deduction |
| Unknown EI opt-in | Not opted in |
| Unknown BPA reduction | Apply full clawback formula |
Section 2 -- Required Inputs and Refusal Catalogue
Required Inputs
Minimum viable -- net self-employment income (from T2125), province of residence on December 31, SIN, date of birth, marital status.
Recommended -- other income sources (T4, T5, T3), RRSP deduction, tax instalments paid, prior year NOA.
Ideal -- complete T-slip package, full deduction schedule, prior year carryforwards, CPP/EI elections.
Refusal Catalogue
R-CA-T1-1 -- Non-residents. "Non-resident returns have different rules. Out of scope."
R-CA-T1-2 -- Deceased / bankruptcy returns. "Require specialist handling. Escalate."
R-CA-T1-3 -- Trust income allocation. "Out of scope."
R-CA-T1-4 -- Provincial tax computation. "Provincial tax is separate. Use the appropriate provincial skill."
Section 3 -- Transaction Pattern Library
The T1 skill consumes outputs from the T2125 skill (net business income) and T-slips. Transaction pattern classification is in the ca-fed-t2125 skill. This skill assembles the return from those inputs.
Section 4 -- Worked Examples
Example 1 -- Standard Self-Employed
Input: Net business income $85,000. RRSP $10,000. No other income. No EI. Ontario.
Computation:
- Total income: $85,000
- CPP: max $8,068.20. CPP2: max $792.00. Total: $8,860.20
- CPP employer-half deduction: $4,430.10
- Net income: $85,000 - $10,000 - $4,430.10 = $70,569.90
- Taxable income: $70,569.90
- Federal tax: $57,375 x 14.5% + $13,194.90 x 20.5% = $8,319.38 + $2,704.95 = $11,024.33
- BPA credit: $16,129 x 14.5% = $2,338.71
- CPP employee-half credit: $4,430.10 x 14.5% = $642.36
- Basic federal tax: $11,024.33 - $2,981.07 = $8,043.26
- Plus CPP payable: $8,860.20
- Total before provincial: $16,903.46
Example 2 -- Low Income, Below BPA
Input: Net business income $14,000. No RRSP.
Computation:
- CPP: ($14,000 - $3,500) x 11.9% = $1,249.50
- Net income: $14,000 - $624.75 = $13,375.25
- Federal tax: $13,375.25 x 14.5% = $1,939.41
- Credits exceed tax: federal tax = $0
- CPP payable: $1,249.50
Example 3 -- High Income, Top Bracket
Input: Net business income $300,000. RRSP $32,490 (max).
Computation:
- CPP + CPP2: $8,860.20. Employer-half: $4,430.10
- Net income: $300,000 - $32,490 - $4,430.10 = $263,079.90
- Federal tax through brackets: $61,588.75
- BPA: $14,538 (reduced for high income). Credit: $2,108.01
- CPP credit: $642.36
- Basic federal tax: $58,838.38
Section 5 -- Tier 1 Rules (When Data Is Clear)
5.1 T1 Income Flow
Total income (line 15000) -> Net income (line 23600, after deductions including CPP employer-half) -> Taxable income (line 26000) -> Federal tax (Schedule 1).
5.2 CPP Self-Employed Computation
On Schedule 8. If earnings < $3,500: no CPP. If $3,500-$71,300: (earnings - $3,500) x 11.9%. If > $71,300: max $8,068.20. CPP2: earnings $71,300-$81,200 at 8.0%. Half deducted, half credited.
5.3 EI Self-Employed (Voluntary)
Rate $1.64/$100, max $1,077.48 (Quebec: $1.30). Covers special benefits only (maternity, parental, sickness). 12-month waiting period. Non-refundable credit at 14.5%.
5.4 Filing Deadlines
Self-employed filing: June 15. Payment due: April 30 (interest from May 1). Late filing: 5% + 1%/month (max 12). Repeat offender: 10% + 2%/month (max 20).
5.5 Instalment Requirements
Required if net tax owing > $3,000 in current year AND either of two prior years. Due: March 15, June 15, September 15, December 15.
Section 6 -- Tier 2 Catalogue (Reviewer Judgement Required)
6.1 Multiple Income Sources
CPP on self-employment must account for CPP already paid through employment. Schedule 8 integrates. Flag if both T4 and T2125 income.
6.2 BPA Reduction for High Earners
BPA = $16,129 - $1,591 x (net income - $177,882) / $75,532. Flag if net income between $177,882 and $253,414.
6.3 Medical Expenses and Charitable Donations
Medical: amounts > lesser of 3% of net income or $2,759. Charitable: 15% on first $200 + 29%/33% on excess. Flag for reviewer.
Section 7 -- Excel Working Paper Template
CANADA T1 -- Working Paper (2025)
A. TOTAL INCOME
A1. Self-employment (T2125 line 13500) ___________
A2. Employment (T4) ___________
A3. Interest / dividends ___________
A4. Other income ___________
A5. Total income (line 15000) ___________
B. NET INCOME
B1. RRSP deduction ___________
B2. CPP employer-half (line 22200) ___________
B3. Other deductions ___________
B4. Net income (line 23600) ___________
C. TAXABLE INCOME
C1. Loss carryovers ___________
C2. Taxable income (line 26000) ___________
D. FEDERAL TAX
D1. Tax on taxable income ___________
D2. Non-refundable credits (x 14.5%) ___________
D3. Basic federal tax ___________
D4. CPP payable (Schedule 8) ___________
D5. EI payable (if opted in) ___________
D6. Provincial tax (separate skill) ___________
D7. Total payable ___________
D8. Less: instalments and withholding ___________
D9. Balance owing / (refund) ___________
REVIEWER FLAGS:
[ ] Province confirmed?
[ ] CPP/CPP2 computed on Schedule 8?
[ ] BPA reduction applied if high income?
[ ] Instalment interest checked?
[ ] Payment deadline April 30 noted?
Section 8 -- Bank Statement Reading Guide
The T1 skill does not directly process bank statements. Bank statement classification is handled by the ca-fed-t2125 skill. T1 consumes the net business income from T2125.
Section 9 -- Onboarding Fallback
ONBOARDING QUESTIONS -- CANADA T1
1. Full legal name and SIN?
2. Date of birth?
3. Marital status as of December 31?
4. Province of residence on December 31?
5. Net self-employment income (from T2125)?
6. Other income sources (T4, investments, rental)?
7. RRSP deduction amount?
8. Tax instalments paid during the year?
9. Tax withheld at source (T4 slips)?
10. Opted into EI special benefits?
11. Prior year Notice of Assessment available?
12. CPP/QPP already paid through employment?
Section 10 -- Reference Material
| Topic | Reference |
|---|---|
| Tax brackets | ITA s. 117(2) |
| BPA | ITA s. 118(1)(c) |
| CPP self-employed | CPP Act s. 10 |
| CPP2 | CPP Act amendments 2024 |
| EI self-employed | Employment Insurance Act, Part VII.1 |
| Filing deadlines | ITA s. 150(1)(d) |
| Instalments | ITA s. 156(1) |
| Non-refundable credits | ITA s. 118-118.95 |
| Canada employment amount | ITA s. 118(10) -- NOT for self-employed |
PROHIBITIONS
- NEVER apply tax brackets without first computing net income and taxable income
- NEVER forget the CPP employer-half deduction from net income
- NEVER apply the Canada employment amount to self-employment income
- NEVER treat EI as mandatory for self-employed
- NEVER compute provincial tax in this skill
- NEVER assume BPA is always $16,129 -- it reduces for high earners
- NEVER allow home office expenses to create a business loss
- NEVER omit CPP2 for earnings above YMPE
- NEVER forget payment deadline is April 30 even though filing is June 15
- NEVER present calculations as definitive
Disclaimer
This skill and its outputs are provided for informational and computational purposes only and do not constitute tax, legal, or financial advice. Open Accountants and its contributors accept no liability for any errors, omissions, or outcomes arising from the use of this skill. All outputs must be reviewed and signed off by a qualified professional (such as a CPA, CA, or equivalent licensed practitioner) before filing or acting upon.
The most up-to-date, verified version of this skill is maintained at openaccountants.com.
Source: OpenAccountants — open tax Guides for AI, reviewed by named CPAs/CAs/EAs. Quality: source-cited draft. For always-current figures and named-accountant backing, connect the OpenAccountants MCP server (openaccountants-mcp).