Canada-first tax reference

Understand Canadian tax language without leaving the real CRA workflow.

Tax Terms Lexicon Canada explains the terms behind T1 filing, slips, deductions, credits, benefits, payroll deductions, GST/HST, Quebec filing context, capital gains, notices, and compliance in plain language.

This is a structured reference site, not a loose glossary. Start from the form, slip, benefit, payment problem, or CRA response in front of you, then move through the linked terms that explain what happens next.

Start Here Browse the Library Read the FAQ

File and Calculate

Use the site for T1 filing, slips, total income, net income, taxable income, and deduction-versus-credit questions.

Decode Documents

Use it to understand T4 and T4A slips, Releve 1, GST/HST returns, notices, reassessments, and balances owing.

Follow the Next Step

Use the related-term paths to move from one tax term into the next page that actually explains the workflow around it.

Fastest Ways In

Open T1 Return Open T4 Slip Sort Out Deductions Compare Credits and Benefits Handle Quebec Filing Context Handle a GST/HST Return Decode a CRA Notice

Use Another Site When

Product, login, billing, pricing, and practice intent do not belong on this site.

Start from the closest real-world trigger

These are the most useful first pages when the reader already has a document, life event, or CRA result in front of them.

T1 Return

Start here if the question is what the personal return is, what gets filed on it, or how the whole filing workflow begins.

T4 Slip

Start here if you are reading employment income reporting and need to connect a slip with payroll deductions and filing.

Child Care Expenses

Start here if the question is whether a family-related amount is a deduction on the return or a separate benefit program.

Quebec Return

Start here if the filing question turns on Quebec’s separate provincial return rather than a one-return assumption.

GST/HST Return

Start here if the business is already registered and the question is about sales-tax filing, net tax, or remittance.

Notice of Assessment

Start here if the CRA already responded and you need to understand the first official post-filing result.

Browse the site by workflow

If the reader knows the topic cluster but not the exact page, these are the four fastest ways to enter the library.

Filing and Core Calculation

Use these sections when the main question is what gets filed, what counts as income, and how tax is calculated.

Benefits, Family Context, and Provinces

Use these sections when the issue is a benefit, a household-status question, or a province-sensitive difference.

Payroll, GST/HST, and Business Workflow

Use these sections when money is being withheld, remitted, reported, or handled through business and sales-tax processes.

Investments and CRA Follow-Up

Use these sections when the issue is capital gains, registered accounts, notices, balances owing, interest, or penalties.

Use the support layer when the question is not a term

The support pages are part of the site shell. They route readers, explain boundaries, and collect fixes without pretending to be tax advice.

Start Here

Use the situation router when the reader knows the trigger but not the exact tax term.

Open Start Here

Library

Use the section directory when the reader wants the whole Canada-first topic map rather than one page.

Open Library

FAQ and About

Use these pages for scope, routing, editorial boundary, and reader expectations.

Read the FAQ

Contact and Disclaimer

Use these pages to report fixes or decide whether the site is enough for a high-stakes question.

Open Contact