CG1 Helper calculates capital gains figures to help complete the CG1 form in Ireland.

You can upload your eToro Excel export. Only the “Closed Positions” sheet is required for processing, but the full report will also be accepted if included.

Yes. Once your file is processed, the tool calculates your CGT liability and shows how much is due for 15 December and 31 January.

This Revenue rule prevents you from claiming a loss if you buy the same shares within 30 days of selling them. CG1 Helper automatically applies this adjustment.

CG1 Helper uses the official Revenue annual USD→EUR exchange rate for each relevant tax year (Tax & Duty Manual Part 04-06-12). When calculating each transaction, the buy amount is converted using the Revenue rate for the year of acquisition, and the sell amount is converted using the rate for the year of disposal.

For the current tax year, the ECB provisional yearly average can be used until Revenue publishes its final rate.

No. Files are processed securely and only kept temporarily for the purpose of generating your results. They are not stored permanently.

There are two CGT payment deadlines each year:

• 15 December – pay CGT on gains made from 1 January to 30 November.
• 31 January – pay CGT on gains made in December.

You then report all gains and losses in your CG1 return by 31 October of the following year.

If you miss a payment deadline, interest will apply until the tax is paid. There is no surcharge for late CGT payments, but Step 25 must be completed on the CG1 form to declare the late payment.

Filing after 31 October results in a surcharge:

• Filed within 2 months – 5% surcharge (max €12,695).
• Filed more than 2 months late – 10% surcharge (max €63,485).

These surcharges apply to your total tax liability, not just CGT.

If your losses exceed your gains, there is no CGT for that year. Unused losses can be carried forward indefinitely and offset against future gains.

Yes. The Excel report includes full step-by-step calculations and transaction details to support your CGT figures in case of a Revenue audit.

CG1 Helper follows the methodology outlined in Irish Revenue guidance for Capital Gains Tax (CGT). It applies the official Revenue annual USD→EUR exchange rate (Tax & Duty Manual Part 04-06-12) or, where applicable, the European Central Bank (ECB) provisional yearly average rate until Revenue publishes its official figure.

The tool also applies the Revenue 30-day Bed & Breakfast rule automatically and presents results in the same structure used on the Revenue CG1 return.

CG1 Helper is currently designed for eToro statements and processes only the "Closed Positions" sheet, which lists completed trades.

The tool does not calculate FX gains or losses on account deposits or withdrawals. All calculations are based only on completed trading activity contained in the file.

Support for additional brokers will be added in future versions of CG1 Helper.

No. CG1 Helper provides automated calculations and general guidance only to help users prepare figures for their Revenue CG1 Capital Gains Tax return.

The tool does not offer personalised financial or tax advice and is not a substitute for consultation with a qualified accountant or tax adviser. Users remain responsible for reviewing their figures and completing their own CG1 submission.

CG1 Helper offers both free and paid bundle promo codes that can be used when submitting your CG1 return.

Subscribe to our YouTube channel to get notified of new free promo codes and any limited-time discounts. Paid bundle packages will be released shortly.