Last Updated: October 26, 2026
Quick Summary
The tax documents needed to file your taxes in Canada include your Social Insurance Number, date of birth, all income slips (T4, T4A, T5, T3), your Notice of Assessment from the prior year, and receipts for any deductions you plan to claim.
- Gather T4 slips from all employers, plus T4A, T5, T3, and T4E slips from other income sources.
- Keep receipts for at least six years to support deduction claims during a CRA audit.
- Self-employed filers must track invoices for all income and business expense receipts for deductible expenses.
- If a tax slip is missing, contact the issuer directly before the February 28 deadline.
- File online through NETFILE for faster processing and refunds within two weeks.
Table of Contents
- Essential Personal Information and Identification Documents
- Income Documents: Employment, Pension, and Investment Slips
- Tax Documents Checklist for Every Filer
- Tax Documents for Self-Employed Individuals and Freelancers
- Deductions and Tax Credits: Receipts and Supporting Records
- Handling Missing Tax Slips and Incorrect Documents
- What to Bring to a Tax Preparer
- Organize and Submit Your Documents to CRA
- Frequently Asked Questions
Essential Personal Information and Identification Documents
When you file your taxes, the Canada Revenue Agency (CRA) needs to verify who you are, which is why knowing what tax documents needed is essential. Start by gathering basic identification information before you touch any income slips or receipts.
You'll need your Social Insurance Number (SIN). This nine-digit identifier is the foundation of your tax file. If you don't have one, apply through Service Canada before filing. You'll also need your date of birth and, if you're married or in a common-law partnership, your spouse's SIN and date of birth.
Dependants require their SINs as well. If you claim children, students, or other dependants, have their SINs ready. The CRA matches this information against their records, so accuracy matters.
Keep a copy of your Notice of Assessment from last year if you filed before. This document shows your previous net income, tax paid, and any adjustments the CRA made. It's not required to file, but it helps you spot errors and understand your tax history.
Income Documents: Employment, Pension, and Investment Slips
Your income slips are the backbone of your tax return. These forms report what you earned to both you and the CRA. Gather them all before you start filing.
Employment income comes on a T4 slip issued by your employer. Learn how personal tax returns handle various income types including employment, self-employed, rental and investment income. This shows your gross salary, payroll deductions, and any taxable benefits. If you worked for multiple employers in the year, collect a T4 from each one. The CRA receives copies from your employers, so missing a T4 will trigger questions.
Pension and retirement income appears on several forms depending on the source:
- T4A for pension payments, registered retirement savings plan (RRSP) withdrawals, and other income
- T4RIF for registered retirement income fund (RRIF) payments
- T4RSP for RRSP contributions made on your behalf by an employer
Investment income is reported on T5 slips from banks and investment firms. These show interest earned, dividends, and capital gains distributions. If you have multiple investment accounts, you may receive several T5s.
Other income slips you might encounter:
- T3 for income from trusts or mutual funds
- T4E for employment insurance benefits
- T4AP for apprenticeship grants
If you're missing any income slip, contact the issuer directly. The CRA no longer accepts phone requests for paper copies of tax slips, you must ask the organization that issued it.
CRA guidance on tax slips and what to do if yours is missing
Tax Documents Checklist for Every Filer
Creating a checklist of the tax documents needed keeps you organized and prevents costly mistakes. Different life situations require different documents, so customize this list to match your circumstances.
Core documents everyone needs:
- Social Insurance Number
- Date of birth
- Spouse's SIN and date of birth (if applicable)
- All T4 slips from employers
- All T4A, T5, T3, and T4E slips
- Notice of Assessment from prior year
- Receipts for any deductions you plan to claim
If you own a home or rent:
- Mortgage interest statements (T776 if you rent out a room or property)
- Property tax receipts
- Home insurance and utility bills (for rental properties)
If you have investments:
- T5 slips from banks and brokerages
- Statements showing capital gains or losses
- Records of RRSP contributions
- T4RIF or T4RSP statements if you withdrew from retirement accounts
If you support dependants:
- SINs for all dependants
- Childcare expense receipts
- Education receipts (tuition, textbooks)
- Medical expense receipts for dependants
| Document Type | Who Issues It | What It Shows | Why You Need It |
|---|---|---|---|
| T4 | Employers | Employment income and deductions | Report all wages earned |
| T4A | Financial institutions, employers | Pension, RRSP, other income | Report retirement withdrawals |
| T5 | Banks, brokerages | Interest and dividend income | Report investment earnings |
| T776 | Self-issued | Rental property income/expenses | Claim rental deductions |
| Receipts | Merchants, providers | Deductible expenses | Support deduction claims |
Tax Documents for Self-Employed Individuals and Freelancers
Self-employed filers need more detailed records than employees. The CRA scrutinizes business income closely, so thorough documentation protects you during an audit.
You won't receive T4 slips, instead, you report business income on a T1 personal tax return using a T2125 form (Statement of Business Activities). This form asks for your gross revenue and business expenses, calculating your net income.
Keep invoices for all income you earned. These prove what you billed clients and when. The CRA matches your reported income against what clients report paying you, so discrepancies raise red flags.
Business expense receipts are critical. Claim deductions only for expenses directly tied to earning income. Common deductible expenses include:
- Office supplies and equipment
- Vehicle expenses (fuel, maintenance, insurance)
- Professional fees and licenses
- Advertising and marketing
- Home office rent or mortgage interest (if you use part of your home exclusively for work)
- Meals and entertainment (50% deductible)
- Travel expenses
Keep receipts for at least six years. The CRA can request them during an audit, and you need proof of every deduction you claim. Digital copies are acceptable, photograph receipts if paper storage is impractical.
If you hire employees or contractors, track payroll records separately. Contractor payments over $500 in a calendar year require a T4A slip to be issued by January 31 the following year.
CRA guidance on self-employment income and deductible business expenses
Deductions and Tax Credits: Receipts and Supporting Records
Deductions reduce your taxable income. Tax credits reduce the tax you owe directly. Both require supporting documentation, the CRA won't accept claims without proof.
Medical expenses qualify if they exceed 15% of your net income. Gather receipts for prescriptions, dental work, eyeglasses, hearing aids, and other eligible treatments. Dependent medical expenses count too.
Charitable donations require official donation receipts from registered charities. The CRA verifies these independently, so ensure the organization is registered.
Childcare expenses are deductible if you paid someone to care for children while you worked or studied. Keep invoices or receipts showing the provider's name, the amount paid, and dates of service.
Tuition and education expenses appear on a T2202 form issued by schools.
Moving expenses are deductible if you relocated for work. Keep receipts for transportation, temporary housing, and storage. Utility connection fees also qualify.
Home office expenses can be claimed if you have a dedicated workspace.
Organize receipts by category. Digital storage is acceptable, scan or photograph receipts and store them securely. Label each file with the date and expense type so you can find them quickly if audited.
Handling Missing Tax Slips and Incorrect Documents
Missing or incorrect tax slips don't have to derail your filing. Act quickly to resolve the issue before the CRA deadline.
If a T4, T4A, T5, or other slip is missing, contact the issuer directly. Employers and financial institutions have until February 28 to issue slips for the prior year.
When you contact them, have your employee or account number ready. Ask them to reissue the slip or confirm they'll send it electronically. Request a duplicate if the original was lost.
If the slip contains an error, wrong amount, incorrect SIN, or wrong box, notify the issuer immediately. They can issue a corrected slip (marked as "amended" or "corrected").
If you can't obtain a missing slip before the filing deadline, file your return reporting the income you earned.
For investment income, if your T5 shows an incorrect amount, contact your bank or brokerage. They issue T5s based on their records, so errors usually stem from data entry mistakes on their end.
CRA information on what to do when a tax slip is missing or incorrect
Keep copies of all correspondence with slip issuers. Learn how to prepare and respond when the CRA reviews your documents and what records to have ready. If the CRA audits you, proof that you requested missing slips demonstrates good faith effort to comply.
What to Bring to a Tax Preparer
If you decide to hire a professional to prepare your return, organize your documents beforehand. This speeds up the process and reduces preparation fees.
Bring all income slips: T4s, T4As, T5s, T3s, and any other slips you received. Include your Notice of Assessment from the prior year. Have your SIN and date of birth ready, plus your spouse's information if filing jointly.
Bring receipts for deductions you plan to claim. Organize them by category, medical, charitable, childcare, tuition, moving, home office. Don't expect the preparer to sort through a shoebox of receipts.
If you're self-employed, bring your business income records and expense receipts. A summary of gross revenue by month helps, along with a list of major expenses.
Bring any correspondence from the CRA, including audit notices, reassessment letters, or requests for information. These documents affect how your return is filed and what adjustments may apply.
CRA guidance on preparing for professional tax help
Have your banking information ready if you're claiming a refund. Direct deposit is faster than waiting for a check.
When you're organized, your preparer can focus on optimizing your deductions and ensuring accuracy rather than hunting for information.
Organize and Submit Your Documents to CRA
Once your return is complete, you'll submit it to the CRA. How you submit depends on your circumstances and preference.
Online filing is the fastest option. Use CRA's NETFILE service through an authorized tax software provider or a CRA-authorized representative like an accountant or tax preparer.
Paper filing is still an option if you prefer. Mail your completed T1 return to the CRA address listed on the form. Paper returns take 6-8 weeks to process.
Keep copies of everything you file. Store your return, all slips, receipts, and correspondence in a safe place for at least six years.
Digital storage is acceptable. Scan or photograph receipts and slips, then store them securely. Ensure your digital files are backed up, a computer crash shouldn't cost you your records.
The CRA filing deadline for most individuals is April 30 the year following the tax year.
When you file with a professional like Lira Tax & Accounting, we handle submission directly to the CRA.
Filing your taxes doesn't have to be overwhelming. The key is gathering the right documents early and organizing them logically.
Add liratax.ca as a preferred source on Google →Frequently Asked Questions
What documents do I need to file an income tax return?
You need proof of identity (driver's license or passport), your Social Insurance Number, all income slips (T4, T4A, T5, T3), government benefit statements, receipts for deductions, and records of any tax credits you claim. If you're self-employed, include business income records and expense receipts. The exact documents depend on your income sources and life situation. Lira Tax & Accounting can help you identify what applies to you.
What tax documents should I gather if I am self-employed?
Self-employed individuals need invoices showing all business income, receipts for business expenses (supplies, equipment, rent, utilities), mileage logs if you claim vehicle expenses, home office records if applicable, and GST/HST documentation if registered. Keep bank statements and financial records that support your reported income and expenses. Professional guidance ensures you claim all eligible deductions and maintain CRA compliance.
What should I do if I am missing a tax slip?
Contact the organization or employer that issued the slip directly, they can provide a duplicate copy or confirm the amount. If you cannot obtain it before filing, report the income based on other records (bank deposits, pay stubs) and note the missing slip on your return. CRA may follow up, so keep documentation of your attempts to obtain it. If you're uncertain, a tax professional can advise on the best approach and help prevent compliance issues.
Do I need to submit receipts with my tax return?
No, you do not attach receipts to your filed return. However, you must keep all supporting documents for at least six years in case CRA requests them for an audit. This includes receipts for deductions, medical expenses, charitable donations, and business expenses. Organize them by category and store them securely. Digital copies are acceptable if they clearly show the amount, date, and purpose of the expense.
