Reviewed by: MyTaxRebate Team on 3 Mar 2026 | Authority: s.472 TCA 1997
Quick Answer
To check your tax code in Ireland, log into the Revenue system at revenue.ie and navigate to "Manage My Tax Credits". You should see the Employee Tax Credit (€1,875, s.472 TCA 1997) and Personal Tax Credit (€1,875) as the minimum credits for every PAYE worker. Additionally, check for any credits relevant to your circumstances: flat-rate expenses for your occupation, the rent tax credit (€1,000/year if you rent privately), the SPCCC (€1,750 if you are a single parent), and any health expenses registered. Any credits absent that you are entitled to mean your employer is deducting too much PAYE. MyTaxRebate reviews all four open years (2022 - 2025) to identify and correct any credit issues at no upfront cost.
What This Page Covers
- ✓How to access and read your tax credit allocation in the Revenue system
- ✓What credits every PAYE worker should have as a minimum
- ✓How to spot and identify tax code errors
- ✓Step-by-step: how to correct a tax credit error in the Revenue system
- ✓How checking your tax code leads to a refund for prior years
- ✓Difference between a tax credit and a tax relief in Ireland
Key Facts at a Glance
- ✓Check tax credits: the Revenue system → Manage My Tax Credits.
- ✓Minimum credits every PAYE worker should have: Employee Tax Credit €1,875 + Personal Tax Credit €1,875 = €3,750.
- ✓Additional credits by circumstance: SPCCC €1,750 (single parents); flat-rate expenses (qualifying occupations); rent tax credit €1,000/year.
- ✓Fix errors: Manage My Tax Credits → Claim Tax Credits - Revenue updates certificate in 1 - 3 days.
- ✓Claim prior overpayments: review the tax position for each of the four open years (2022 - 2025).
- ✓You can view your current and prior year tax credit certificates directly in the Revenue system under the "Tax Credit Certificates" section - incorrect prior year certificates indicate a recoverable overpayment for that year.
Step-by-Step: Checking Your Tax Credits in the Revenue system
1. Go to revenue.ie and log in with your PPS number and MyGovID credentials. If you have not yet set up MyGovID, register at mygovid.ie using a government-issued photo ID - the process takes approximately 10 minutes and is required for all the Revenue system access. 2. From the dashboard, click on "Manage My Tax" and then select "Tax Credits and Reliefs" or navigate directly to "Manage My Tax Credits". 3. Revenue displays all credits and reliefs currently registered for each employment on your record. 4. Check the list against the credits you should have based on your personal circumstances (see below). 5. Click through to each employer listed under "Jobs and Pensions" to see the cut-off point and credits allocated to each employment separately.
What Your Credit List Should Show
Every PAYE worker's credit record must include the Personal Tax Credit (€1,875) and the Employee Tax Credit under s.472 TCA 1997 (€1,875). These are the universal credits for all employed PAYE workers. If either is missing, your employer is over-deducting PAYE by an amount that translates to €1,875 in annual overpayment per missing credit. In addition, depending on your circumstances, your credit record should show: the Single Person Child Carer Credit (€1,750) if you are a qualifying single parent; flat-rate professional expenses for your occupation if applicable; the rent tax credit (€1,000/year) if you have claimed it for the relevant years; and any registered health expenses for the current year. If any of these are absent when they should be present, your tax deductions have been too high and a refund is likely due.
Comparing Your Payslip Against Expected Deductions
A useful cross-check is to compare the PAYE shown on your payslip against what is expected given your income and credits. For a single worker earning €3,000 gross per month in 2025 with both standard credits correctly applied, the monthly PAYE should be approximately: ((€3,000 x 12) x 0.20 - €3,750 credits) / 12 = approximately €287 per month. If your payslip shows significantly more than this, your credits may be incorrect or emergency tax may be running. For workers on the higher rate (income above €42,000/year), the calculation is more complex but the basic principle is the same: credits should be reducing monthly deductions proportionally.
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Correcting Tax Code Errors and Claiming Prior Overpayments
After identifying missing credits, use "Claim Tax Credits" in the Revenue system to add them. For flat-rate expenses, select your occupation category. For the rent tax credit, enter your landlord's PPSN and annual rent paid. For the SPCCC, enter the qualifying child's details. Revenue updates the tax credit certificate issued to your employer within 1 - 3 working days and future payslips reflect the corrected deductions. For years already passed where the missing credits caused an overpayment, navigate to the PAYE review area → review the tax position and submit reviews for each of the four open years (2022 - 2025). Revenue recalculates each year using the correct credits and issues refunds for any overpaid amounts.
Reading Your Tax Credit Certificate
Revenue issues a tax credit certificate to your employer whenever your credits or cut-off point change. The certificate shows: your total annual tax credits (which should include the Personal Tax Credit of €1,875 and the Employee Tax Credit of €1,875 under s.472 TCA 1997, plus any other approved credits); the standard rate cut-off point (the income level below which the 20% rate applies, rather than 40%); and the tax rate applicable to income above the cut-off. The employer's payroll system uses these values to calculate the correct PAYE deduction for each pay period. If your certificate shows incorrect values - for example, a cut-off of €0 indicating emergency tax, or a credit total lower than €3,750 - your employer is legally obligated to deduct based on the certificate received, and the fix must come through Revenue issuing a corrected certificate.
You can view your current tax credit certificate in the Revenue system under "Tax Credit Certificates". This screen shows the certificate issued to each employer for the current and prior years. If the certificate shows less than €3,750 in combined credits without explanation, or if the cut-off point is €0, this indicates a problem that needs to be corrected through the "Manage My Tax Credits" section. Common corrections include adding the Employee Tax Credit, registering a flat-rate occupational expense, adding the rent tax credit, or requesting that the standard rate band is split correctly between two employers.
Checking Prior Years for Incorrect Codes
It is possible to view the tax credit certificates that were in place for prior years through the Revenue system. Under "Tax Credit Certificates", select the relevant year from the dropdown to see what was registered for that employment in that year. If the certificate for 2022, 2023, or 2024 shows incorrect credits or cut-off, the year-end review for that year will produce a refund based on the correct position. The review does not require you to know exactly what the correct certificate should have shown - Revenue calculates the correct liability based on the credits you are entitled to and the income declared, regardless of what the certificate showed at the time.
Workers who have never checked their tax code and have been on the same employer and same credits for several years may find that the code is correct and no overpayment exists. However, workers who have changed employer, started paying rent, had a qualifying health event, or changed their living or family circumstances without updating Revenue may find that their code has been incorrect for one or more of the open years, generating a recoverable overpayment for each affected year. MyTaxRebate checks all four open years simultaneously and identifies any year where an incorrect code generated an overpayment.
Check Your Claim
MyTaxRebate can review your position and guide the next step.
Tax Scenarios
Employee with missing credits
A PAYE worker finishes the year with standard credits not fully reflected in payroll. The corrected annual calculation reduces liability by €940, creating a refund once the file is reviewed properly.
Worker who changed jobs
An employee changes employer twice in one year and payroll deductions do not align neatly across the record. A full review shows €780 of overpaid tax after the final year-end reconciliation.
Part-year worker with reliefs still unused
A worker has employment income for only part of the year and also has allowable reliefs that were never fully used. The combined review produces a refund of about €1,120 rather than a smaller payslip-only correction.
Common Mistakes To Avoid
- ✗Never having checked your credit allocation - many workers have never logged into the Revenue system to verify what credits are registered.
- ✗Assuming the employer is deducting the right amount - employers apply what Revenue tells them; if Revenue's record is wrong, the deduction will be wrong.
- ✗Checking only the current year and not submitting reviews for prior years - incorrect codes from prior years cause accumulated overpayments that are only recovered through year-end reviews.
- ✗Claiming credits you are not entitled to - this creates an underpayment that Revenue will identify and recover by reducing future credits.
When This Does Not Apply
Key Takeaways
- Check your tax credits in the Revenue system → Manage My Tax Credits - every PAYE worker should verify the Employee Tax Credit (€1,875, s.472 TCA 1997) and Personal Tax Credit (€1,875) are both present.
- Add any missing credits immediately - Revenue updates your employer's certificate within 1 - 3 working days.
- Submit a review the tax position for each open year (2022 - 2025) to recover any overpayments from incorrect credits in prior years.
- MyTaxRebate reviews the credit record and all four open years as part of the comprehensive claim at no upfront cost.
Check Your Claim
MyTaxRebate can review your position and guide the next step.
Frequently Asked Questions
How do I check my tax code in Ireland?
Log into the Revenue system at revenue.ie → Manage My Tax Credits. Your full credit and relief allocation is displayed for each employer registered on your record.
What credits should every PAYE worker have?
As a minimum: Employee Tax Credit €1,875 (s.472 TCA 1997) and Personal Tax Credit €1,875. Additional credits depend on personal circumstances (SPCCC for single parents, flat-rate expenses for qualifying occupations, rent tax credit for private renters).
How do I add a missing tax credit?
In the Revenue system → Manage My Tax Credits → Claim Tax Credits. Select the applicable credit, enter the required details, and confirm. Revenue issues a revised certificate to your employer within 1 - 3 working days.
Can I check credits for a prior year?
Yes. In the PAYE review area → review the tax position, you can see the credits that were applied in each prior year and add any that were missing by submitting a review. Revenue recalculates the year and issues any refund.
What is the difference between a credit and a relief in Irish tax?
A credit reduces tax owed by the credit amount (€1 credit = €1 less tax). A relief reduces taxable income: 20% of €1,000 in qualifying health expenses = €200 credit equivalent. Both appear on the tax credit certificate and reduce employer deductions.
Do I need to check my tax code every year?
An annual check is good practice, especially after life events (marriage, new child, job change) that affect credit entitlements. Reliefs such as health expenses and rent tax credit must be added annually. Flat-rate expenses, once registered, carry forward automatically.
