Opening 18I Files

The 18I file type is primarily associated with TaxACT.

18I	File extension: 18I
	File type:	tax return data file

What is a 18I file?

18I files mostly belong to TaxACT.

The 18I file is a TaxACT 2018 tax return file. It uses the ZIP format internally to package your tax return data in a compact form.
This means that while the extension is unique, the file contains data compressed much like any ZIP archive.

Key points to note include:

Usage: It is deployed by TaxACT software to store and manage your tax return data.
File structure: Despite the special extension, the underlying file is a ZIP archive designed specifically for tax returns from 2018.
Access: The file is best opened using TaxACT software. Some users rename the extension to .zip and then use a ZIP tool to view its structure.

For additional details and support, refer to the TaxACT website.
FilExt.com note: Use official software to avoid data issues and keep backups of your tax files.

How can I open a 18I file?

You need a suitable software like TaxACT to open a 18I file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your 18I file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a 18I file directly in the browser:. Just drag the file onto this browser window and drop it.

Online 18I Text Viewer

Choose your .18i file to analyze

or drag and drop it here

Online File Viewer

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Programs that open and convert 18I files:

TaxACT
See the previous paragraphs to learn more about the main application. 18I files are often referred to as TaxACT data files because this type of file is primarily created or used by this software.
Voice Type Languages (IBM Voice Type Languages Scripts Data) by IBM
The 18I file extension is a voice type language script data from the developers IBM. It is a fairly popular file type and can be run by a number of programs installable on the Windows operating system. There are over 4,000 other file formats that belong to the Misc file category along with the .18I file extension. Although IBM recommends IBM Voice Type, the Windows operating system can be used to open 18I files effectively.

Technical Data for 18I File Extension

File classification:

Data

Related files:

tax, txf, taxact, 18, i, zip, spv, 2, spe, dat, xml

a 18i tax return data file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with 18I files

Associate the 18I file extension with the correct application.
Update your software that should actually open tax return data files. Because only the current version supports the latest 18I file format. Search, therefore, e.g. on the manufacturer website after an available TaxACT update.
To make sure that your 18I file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .18I file online - secure, fast, and no downloads needed.