Instafill.ai processed Ireland's Form 11, a 44-page tax return with 3,885 fields
In October 2025, Instafill.ai automated Ireland's official Form 11, the Income Tax Return and Self-Assessment for 2024. It is a 44-page government PDF with 3,885 fillable fields, the largest and most complex form Instafill.ai had processed. That is nearly eight times the size of the complex forms it usually handled, which ran from 300 to 500 fields.
The original Form 11 had no interactive fields. Instafill.ai converted it into a fillable PDF, mapped every field, worked out the logic between them and fine-tuned the whole document. The fine-tuning details in the form viewer report 3,885 fine-tuned fields.
At a glance
- Form categories Tax forms
Time
Filling out Form 11 by hand typically takes a tax professional who knows the document 4 to 6 hours, according to the post. Instafill.ai filled it in under 10 minutes, a reduction of more than 96%. For a practice that files dozens of returns during tax season, that is hundreds of hours.
What the milestone says about limits
Customers often ask about limits. Page counts and file sizes had been discussed, but field count had not, because no form had been this large. Form 11 set that benchmark: a form with fewer fields than this is within the range Instafill.ai has already processed. The same field detection and mapping is described on the PDF field extraction page, and more forms of this kind are in the tax forms category.
Revenue publishes Form 11 on revenue.ie; the file at that address now covers a later tax year than the 2024 form in this post.
If you work with complex multi-page forms, such as credentialing packets, compliance documents, government applications or financial disclosures, the post invited you to send a form to [email protected] for an evaluation.
