📋 Top 10 Free Tools for Pakistan’s 31 October Tax Deadline

1. Income Tax Calculator — know your liability before you file

Run your annual taxable income through the Income Tax Calculator first. It applies the Tax Year 2026 slabs so you see roughly what you owe before you log in to IRIS. If the portal’s number looks wildly different, you know to double-check your entries instead of filing blind.

2. Salary Calculator — get your annual taxable figure right

Most salaried filers trip on the same thing: monthly pay vs annual taxable income. The Salary Calculator converts hourly, monthly and yearly figures and breaks down gross vs net, so the number you type into the return matches your actual salary slips.

3. Rental Property Calculator — rental income is taxable too

Rent you receive must be declared. The Rental Property Calculator helps you total rental income against expenses and loan interest, giving you a clean net figure for the property section of your return.

4. Sales Tax Calculator — GST in your expense records

If you’re reconciling business expenses, the Sales Tax Calculator quickly separates GST from the base amount on any invoice — handy when your purchase records and your return need to agree.

5. Percentage Calculator — quick slab and share math

What share of your income went to tax? What’s a 2.5% withholding on Rs. 400,000? The Percentage Calculator answers these in seconds — the small sanity checks that catch big mistakes.

6. Merge PDF — one upload pack for IRIS

IRIS attachments go smoother as one tidy file. Merge PDF combines salary slips, bank statements and withholding certificates into a single PDF — no more hunting through five separate uploads.

7. Compress PDF — beat the file-size limits

Portals reject oversized scans. Compress PDF shrinks your documents under the size limit while keeping them readable — free, and it runs entirely in your browser so your financial documents never leave your device.

8. Split PDF — send only the pages that matter

Your bank statement is 40 pages; the FBR needs 3. Split PDF extracts just the relevant pages, so you upload exactly what’s required — nothing extra.

9. JPG to PDF — phone scans become filing-ready files

Snapped a receipt or certificate with your phone? JPG to PDF turns those photos into a proper PDF in one click — the format IRIS actually accepts.

10. PDF to JPG — when a portal wants images

Some verifications ask for image uploads instead of PDFs. PDF to JPG converts any page of your document to a clean image, ready to attach.

Before you hit submit: a 5-minute checklist

• Match the slabs: re-run your total through the Income Tax Calculator — if IRIS disagrees by more than a few rupees, re-check your inputs.
• Count every income source: salary, rent, freelance, bank profit — undeclared income is what triggers notices.
• Keep proofs: withholding certificates and salary slips merged into one PDF (tool #6) and saved somewhere safe.
• File before 31 October: after the deadline, late-filing penalties apply and you risk dropping off the Active Taxpayers List — which means double withholding tax on your transactions all year.

Note: these tools give estimates for planning and cross-checking. For complex cases (business income, foreign assets), a tax consultant is worth the fee.