How to Use the Pay Stub Explainer

Overview

What Does the Pay Stub Explainer Do?

The WorkersPool Pay Stub Explainer takes the numbers from your pay stub and produces a plain-English breakdown of every line item — what each deduction is, why it is taken, what the legal rate is, and whether the amounts look correct based on published rates for your country.

You can upload your pay stub as a PDF and the tool will attempt to extract the amounts automatically, or you can enter the figures manually. Either way, the output explains gross pay, each deduction category (income tax, CPP/EI/NI/Medicare, benefit premiums, union dues), net pay, and projects your annual gross and net earnings based on your pay period.

It is particularly useful for first-time employees, people who have recently changed employers, workers who have received a raise and want to understand the new deductions, or anyone who has noticed something unexpected on their stub.

Audience

Who Is This Tool For?

First-time employees receiving their first pay stub and confused by the deductions

Workers who recently changed employers and want to verify the new deductions are correct

Employees who just received a raise and want to understand what changed on their stub

Anyone who notices something unexpected or unfamiliar on their paycheck

Workers in Canada, USA, UK and Australia

HR professionals who want a quick reference tool to share with new employees

Features

Key Features

Plain-English deduction explanations

Optional PDF upload

Manual entry option

Country-specific rates

Annual projection

Deduction sanity check

Print report

100% private — browser only

Instructions

Step-by-Step Instructions

Enter your first name (optional)Personalises your results report. Not stored anywhere.
Select your countryChoose Canada, United States, United Kingdom or Australia. This determines which deduction categories are shown and which published rates are used for the sanity check.
Upload your pay stub PDF or enter manuallyClick the PDF upload zone and select your pay stub file (max 5 MB). The tool will attempt to extract the key amounts. If extraction fails or figures look incorrect, switch to manual entry — simply type the numbers from your pay stub into each field. The most important fields are Gross Pay and Net Pay.
Select your pay periodChoose Weekly, Bi-weekly, Semi-monthly or Monthly. This tells the tool how often you are paid, which it uses to calculate your annual projections correctly.
Enter your deduction amountsFill in the deduction fields shown — these vary by country. For Canada: Federal Tax, Provincial Tax, CPP, EI, and Other (benefit premiums, union dues, pension). Leave any deduction field blank if it does not appear on your stub.
Click Explain My Pay StubYour full breakdown appears — each deduction explained in plain English, a gross-to-net summary, annual projections, and flagged items if anything looks outside the expected range.
Print or save your reportUse the Print Report button to save or share the explanation. Useful if you want to take it to HR or a tax professional.

Deductions Explained

What Each Deduction Means — Canada Example

Deduction	What It Is
Federal Income Tax	Tax withheld by your employer and remitted to CRA on your behalf. Based on your estimated annual income and TD1 claim code.
Provincial Income Tax	Tax withheld for your province of employment. Rates vary by province — Quebec is highest, Alberta has the lowest flat rate.
CPP (Canada Pension Plan)	Mandatory contribution to the public pension plan. Employee rate is 5.95% of pensionable earnings (2026). Your employer matches this amount.
EI (Employment Insurance)	Mandatory insurance premium that funds EI benefits if you lose your job. Employee rate is 1.66% of insurable earnings (2026). Employer pays 1.4× your premium.
Benefit Premium	Your share of the cost of employer-provided benefits — health, dental, life insurance. Amount varies by plan and employer.
Union Dues	Monthly fee paid to your union. Tax-deductible — claim on your T1 return.
Pension Contribution	Your contribution to an employer pension plan (DB or DC). Often matched by employer up to a percentage.

Worked Example

Example: Sophie's Bi-Weekly Pay Stub in Ontario

Pay Stub Inputs (bi-weekly)

Gross Pay$2,884.62

Federal Tax$385.00

Provincial Tax (ON)$187.00

CPP$142.00

EI$47.88

Benefit Premium$65.00

Net Pay$2,057.74

Explained Output

Annual Gross Projection$75,000

Annual Net Projection$53,501

Total Deduction Rate28.7% of gross

CPP Rate Check✅ Within expected range

EI Rate Check✅ Within expected range

The tool confirms Sophie's CPP and EI deductions are within the correct ranges for her income level, explains what each deduction is for in plain English, and projects her annual net income — giving her a clear picture of her true take-home pay for the year.

Strengths & Limitations

What This Tool Does Well — and Where It Has Limits

Strengths

Plain-English explanations that anyone can understand
100% private — no data ever leaves your browser
Deduction sanity check flags unexpected amounts
Annual projection helps with budgeting
Covers four countries with country-specific rates
Optional PDF upload saves manual typing

Limitations

PDF extraction may fail for scanned or image-based pay stubs
Cannot verify employer-specific benefit or pension plan details
Tax withholding sanity check uses standard rates — your actual TD1 claim code or W-4 elections may result in different withholding
Provincial/state tax rates are simplified — some edge cases may differ
If something looks wrong, always confirm with your payroll or HR department

Disclaimer

Important Disclaimer

The Pay Stub Explainer is for informational purposes only. Explanations are based on standard published rates and rules — your individual deductions may vary based on your TD1 or W-4 elections, benefit plan elections, pension contributions, union agreements and specific employment contract terms. If a deduction looks incorrect, contact your employer's payroll or HR department. WorkersPool accepts no liability for decisions made based on this tool's output.

FAQ

Frequently Asked Questions

Why is my tax deduction so high?

Tax withholding is based on your employer's estimate of your annual income. If you started mid-year, received a bonus, or have multiple jobs, your employer may withhold at a higher rate to avoid under-withholding. You can submit a new TD1 form (Canada) or W-4 (USA) to your employer to adjust your withholding if your situation has changed.

Why does my CPP deduction stop partway through the year?

CPP contributions stop once you have reached the annual maximum pensionable earnings ceiling ($68,500 in 2026). Once you hit the maximum, contributions stop for the remainder of the year and your net pay increases slightly. This is normal and expected — not an error.

What should I do if a deduction looks wrong?

First, check your most recent TD1 or W-4 form to confirm your claim code or withholding elections are correct. Then contact your employer's payroll or HR department with the specific line item in question. Keep a record of the conversation. If you believe there has been an overpayment of tax, you will recover it when you file your annual return — you cannot typically get it back immediately from payroll.

What is the difference between bi-weekly and semi-monthly?

Bi-weekly means you are paid every two weeks — 26 pay periods per year. Semi-monthly means you are paid twice per month on fixed dates (e.g. the 1st and 15th) — 24 pay periods per year. Your annual gross is the same either way, but the per-period amount differs. Make sure you select the correct option for accurate annual projections.

Can I use this tool for a US pay stub?

Yes — select United States as your country. The deduction fields will change to show Federal Income Tax, State Income Tax, Social Security (6.2%), Medicare (1.45%), and Other. The sanity check uses published federal rates. State income tax rates vary significantly — the tool uses a general estimate which may differ from your specific state.

Pay Stub Explainer — Help Guide