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Authorization Codes


09.21.2023 - Ver. 2023.1.1 is ready for download - Release notes

Bilingual - AvanTax Auto is available in both French & English.



Features of AvanTax Auto

Technical Support

User Guide



Links to Other Tax Resources

Federal Web Sites

Provincial Web Sites

Links to Other AvanTax Software Resources

AvanTax eForms

ELM Computer Systems Inc. has developed a wide range of custom and specialty software. One such application is our AvanTax eForms software. Since 1987 eForms has been used by thousands of firms across North America to prepare T4, T4A, T5, RL-1, RL-3 and many additional Canadian tax information slips. With eForms you can easily prepare paper or electronic submissions; check data for errors; import or export data with third party applications and much, much more.

AvanTax Filing Services

ELM Computer Systems Inc. has released AvanTax Filing Services, enabling clients to offload processing of year end tax slips to ELM Computer Systems to any desired level. Our vast experience in this field means that you can rest easy, knowing that your data is in good hands.