FIRE closesLast FIRE filing Nov 19 · IRIS-only from Jan 1
Your 1099 CSV, IRIS-ready on the first upload.
Drop the CSV you built from the IRS template. IRIS CSV checks every cell against the IRS formatting rules for all 36 IRIS forms, fixes the mistakes that get files rejected, and splits big files into 250-record uploads. It runs in your browser, so your TINs never leave your computer.
- Runs 100% in your browser
- TINs never uploaded
- IRS TY2025 rules · 36 forms
- No sign-up
—days until FIRE stops accepting filesNov 19, 2026 · 3 p.m. ET
—days until 1099-NEC is dueFeb 1, 2027 (Jan 31 is a Sunday)
250records max per IRIS CSV100 forms per submission
$2,000new 1099-NEC thresholdpayments made in 2026 (was $600)
The checker
Drop your CSV. Get a file IRIS accepts.
Works with the official templates from the IRIS Taxpayer Portal ("Upload CSV with Form Data") and with spreadsheets you export from QuickBooks, Xero, Gusto or Excel.
Drop your IRIS CSV here
or choose a file — .csv, .txt or .xlsx. Nothing is uploaded.
Turn any vendor list into an IRIS CSV
Upload a CSV or Excel export (one row per payee). Match the columns once, enter your payer details, and we build the IRIS template rows and check them.
Rules
What it catches and fixes
Every rule comes from the IRS Template Formatting Guidelines and the "Common reasons for CSV files being rejected" table in Publication 5717.
Spreadsheet damage
Excel turns TINs into 5.12E+08, drops the leading zero from ZIP 02110 and adds blank rows of commas. We restore what can be restored and flag what can't.
02110 → 211002110
TIN formats
EINs must be XX-XXXXXXX and SSNs/ITINs XXX-XX-XXXX. We format them from the TIN Type and infer the type when it's blank.
47123456747-1234567
Forbidden characters
Pub 5717: no periods or # in name and address lines. Accents become plain letters.
Ocean Dr., Ste #4Ocean Dr Ste 4
Money fields
$ signs, commas and $0.00 values are rejected. Zero must be blank.
$12,480.0012480.00
Checkboxes & codes
Empty checkboxes need "N". States, countries and types get the exact codes.
Florida · USAFL · US
Too-long fields
Address Line 1 is 35 characters max. We move "Apt 12" or "Suite 400" to Line 2 for you and flag names over 40 characters.
1500 NW Biscayne Blvd Building 7 Unit 22101500 NW Biscayne Blvd | Building 7 Unit 2210
250-record limit
Big files are split into IRIS-sized CSVs, each with the header row.
612 records3 files
How it works
1
Download the template
In the IRIS Taxpayer Portal, open "Upload CSV with Form Data" and download the template for your form and tax year. Fill it (or let us convert your spreadsheet).
2
Drop it here
We map the columns, check every cell against the IRS rules for that form, auto-fix the safe problems and list the ones that need you.
3
Upload the fixed file
Download the corrected CSV (or the split files) and upload it in IRIS. File-level errors gone; field-level errors caught before the IRS sees them.
Free IRS portal. Fewer rejections.
The IRIS Taxpayer Portal is free. What costs money is a CSV that keeps getting rejected — or paying an e-file service per form.
| Comparison | IRIS CSV | E-file services | Fixing by hand |
|---|---|---|---|
| Cost for 100 forms | $29 once (lifetime) | ~$125–$300 ($1.25–$3 per form) | Free, hours of trial and error |
| Your data | Stays in your browser | Uploaded to their servers | Stays with you |
| Rules checked | Every field, 36 forms | Their own import format | Whatever you remember |
| Files over 250 records | Split automatically | Handled | Split by hand |
| Who files | You, free in IRIS | They do | You |
E-file price example: IRISfile's public pricing ($3 down to $1.25 per form by volume, $50 minimum), checked Oct 16, 2026. irisfile.co/pricing
Pricing
One price. Every tax year.
Free
$0
- Unlimited checks
- Download fixed files up to 10 records
- See issues for the first 25 rows
- All 36 IRIS forms
Pro Best value
$29 one-time
- Unlimited records and files
- Auto-split into 250-record CSVs (ZIP)
- Full issue report (CSV) for your records
- Spreadsheet → IRIS conversion
- Use your official template header
- All future tax years · no subscription
Unlock Pro — $29
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Questions
Is my data uploaded anywhere?
No. The file is read and checked by JavaScript in your browser tab. TINs, names and amounts are never sent to our server. Only the payment confirmation (a Stripe checkout ID) touches our server when you buy Pro.
Does this file my 1099s?
No. IRIS CSV prepares and checks the CSV. You upload it yourself in the IRS IRIS Taxpayer Portal, which is free. You need an IRIS Transmitter Control Code (TCC) for the portal.
FIRE is retiring — do I need this?
If you filed through FIRE, you must move to IRIS before the 2027 filing season: FIRE takes its last files on November 19, 2026 at 3 p.m. ET and IRIS is the only e-file system after January 1, 2027. The portal's CSV upload is the free bulk option, and it is strict about formatting.
Which forms are supported?
All 36 forms with IRIS CSV templates for tax year 2025, including 1099-NEC, 1099-MISC, 1099-INT, 1099-DIV, 1099-R, 1099-K, 1099-B, 1099-S, 1098, 1098-T, 5498, W-2G, 3921, 3922 and 1042-S. The deepest checks are for the common 1099s.
Can it guarantee IRIS accepts my file?
No tool can, and we won't pretend. We check every rule the IRS publishes for the template, plus the common rejection causes in Publication 5717. The IRS can still reject data for reasons outside the file format, like a TIN that doesn't match its records.
What about tax year 2026?
You can select 2026 now. The IRS has not yet published TY2026 CSV guidelines; we apply the TY2025 rules and the new $2,000 1099-NEC threshold for warnings, and will update when the IRS releases the 2026 templates.
Do you have a Spanish version?
Yes — the whole tool works in Spanish at /es/.
Guides
Plain-English answers, with links to the IRS sources.
Deadline
FIRE is shutting down. Here's how to move your 1099s to IRIS
FIRE accepts its last files on November 19, 2026. From January 1, 2027, IRIS is the only IRS e-file system for 1099s. Dates, TCC steps and the free CSV upload option.
TroubleshootingWhy IRIS rejects your CSV, and how to fix each error
The IRIS Taxpayer Portal rejects CSVs for scientific notation, ZIP codes, line breaks, extra spaces, periods and #, $0.00 and empty checkboxes. Each cause, with the fix.
TemplateThe 1099-NEC IRIS CSV template, column by column
What goes in each column of the IRS IRIS 1099-NEC CSV template for tax year 2025: required fields, formats, character limits, Box 1/Box 2 rules and state fields.
RulesThe 1099-NEC threshold is now $2,000. Here's which forms it applies to
For payments made in 2026, the 1099-NEC reporting threshold is $2,000, up from $600. The forms due February 1, 2027 use it; 2025 payments still use $600.
LimitsIRIS CSV limits: 250 records per file, 100 forms per submission
The IRIS Taxpayer Portal accepts up to 250 records per CSV (header excluded), one form type and tax year per file, and 100 forms per submission. How to split large files.
Stop fighting the IRIS upload screen.
Drop your CSV and see every problem in seconds — free, private, no account.
Check my CSV