KarSaathiFile your ITR in minutes, without the guesswork.
Upload your Form 16 and AIS. KarSaathi’s smart tax engine reads them, picks ITR-1 or ITR-2, finds the regime that saves you more, and hands you a PDF that follows the e-filing portal screen by screen. Filing becomes copying, not guessing.
- No card needed for your first guide
- Documents never leave your device
- Old and new regime compared
From documents to a ready-to-file guide in three steps
You keep control of the actual filing. KarSaathi does the reading, the arithmetic and the matching to portal fields.
Upload what you have
Form 16 from your employer and the AIS from the income tax portal, as PDF or JSON. No documents handy? Type the figures in.
Check the numbers
Every value stays editable, and you see which document it came from. We compare both tax regimes and show which costs you less.
Copy into the portal
Your PDF guide walks through each portal screen in order with the exact value for every field, so you never wonder what goes where.
It does the hard part, so you file with confidence
Built on the Income-tax rules for FY 2025-26, and every figure shows the document it came from.
Reads your documents
Pulls salary, exemptions, deductions and TDS from your Form 16, and interest, dividends and TDS from your AIS. All on your device.
Cross-checks Form 16 against AIS
Flags it when your salary or TDS doesn’t match between the two, a common reason for tax notices, before you file.
Picks the right form
ITR-1 or ITR-2, chosen from your income, with the reason in plain words. Filing the wrong form can make your return defective.
Finds your cheaper regime
Calculates your tax under both the old and new regimes and shows exactly how many rupees you save with each.
Applies every rule and limit
80C, 80D, NPS, HRA, the 87A rebate, capital gains exemptions, loss set-off, surcharge and marginal relief, all capped correctly.
Gives you a portal-ready PDF
Every field in the same order as the e-filing portal, with the value to enter and where it came from. Share it with your CA in one tap.
Are you paying more tax than you need to?
The cheaper regime depends on your deductions, and it can change from year to year. Compare both with your own numbers in a couple of minutes, free.
A guide shaped like the portal itself
The sections follow the ITR-1 and ITR-2 online forms on eportal.incometax.gov.in, so the guide and the screen in front of you move together.
- Personal informationRegime choice under section 115BAC, filing section, nature of employment and refund bank account.
- Gross total incomeSalary with section 10 exemptions and section 16 deductions, house property, and income from other sources.
- Total deductions80C, 80CCD(1B), 80CCD(2), 80D, 80E, 80G, 80TTA and 80TTB, each capped at its legal limit.
- Tax paidTDS on salary, TDS on other income, and advance or self-assessment tax, matched against your AIS.
- Capital gainsShort and long-term gains on shares and mutual funds, Schedule 112A, loss set-off and carry-forward (ITR-2).
- Total tax liabilityTax, rebate under 87A, cess, and your final refund or amount payable.
People who filed with KarSaathi
Build your filing guide
Your documents and tax figures stay on your device. Your account only keeps your email and a one-way fingerprint of your PAN, to track the guides you’ve unlocked.
Upload your documents
Add your Form 16 (PDF from your employer) and your AIS as JSON. To get the JSON, log in to the portal, open AIS, then choose Download and JSON. We pick out the figures on this device and fill in the next steps for you to check.
About you
Most of this is prefilled on the portal from your PAN profile. We use it to label your guide and pick the right tax slabs.
What applies to you this year?
Tick everything that applies to the year April 2025 to March 2026. We’ll then ask about each one separately and skip the rest.
Your filing guide
Choose a regime below. The guide underneath updates to match, and the PDF contains exactly what you see here.
Your documents stay with you
Files are read inside your browser and never uploaded. Your account holds only your email, your guide balance and a one-way PAN fingerprint.
Every figure is traceable
Each value in your guide shows the document it came from and the rule applied, so you can verify it before you file.
You file, not us
We never ask for your portal password. You log in yourself and enter each value, so you see and approve everything that goes into your return.
Your first guide is free. Then pay per guide.
Every email address gets one free filing guide with every feature included. Need more for family or clients? Pick a package. One guide covers one PAN for AY 2026-27, with unlimited edits and downloads.
Request a package and we’ll send you payment details on WhatsApp (+91 93370 48858). Your guides are added as soon as we confirm your payment, Monday to Friday, 10 am to 4 pm.
Questions people ask
Is it really free?
Yes. Every email address gets its first filing guide free, with every feature included and no card needed. After that, a single guide costs ₹99 for ITR-1 or ₹199 for ITR-2, or you can buy a pack of 3 or 5.
What counts as one guide?
One guide covers one PAN for one assessment year. You can change your figures and download the PDF as often as you like. If a guide you unlocked for ITR-1 later needs ITR-2, upgrading it uses one ITR-2 or pack guide. Paid guides are valid for 12 months from your latest purchase or coupon, and are non-refundable, so try your free guide first.
How do I sign in?
Just enter your email. We send a 6-digit code, with no password to remember.
Is my data safe?
Your documents are read inside your own browser and never uploaded, and your tax figures stay on your device. Your account stores only your email, your guide balance and a one-way fingerprint of your PAN. We never ask for your portal password.
Does KarSaathi file my return?
No. KarSaathi prepares a field-by-field guide. You log in to eportal.incometax.gov.in, enter the values, verify the portal’s own computation and e-verify the return yourself.
Who can use it right now?
Resident individuals filing ITR-1 or ITR-2: salary or pension, up to two house properties, interest and other income, and capital gains on shares and mutual funds, at any income level. KarSaathi picks the right form for you. Sales of property, business income, crypto and foreign assets aren’t covered yet.
What if the portal shows a different number?
The portal’s computation is final. Small differences usually come from prefilled values that differ from your documents. Check the AIS line items first, and correct any mismatch before you submit.
Is this tax advice?
No. KarSaathi is a computation and form-filling aid based on the rules for FY 2025-26. For complex situations or notices, speak to a chartered accountant.
Don’t leave your refund waiting.
Belated returns for AY 2026-27 can be filed until 31 December 2026. Build your guide now and file today.