Auto-Populated Input VAT - How to Claim Your Full Credit (2026)

How Input VAT Auto-Population Works

The auto-populated VAT return does not ask you to enter input VAT manually. Instead, KRA’s platform matches every eTIMS invoice transmitted by suppliers against the buyer KRA PIN field on the invoice. When your PIN appears as the buyer PIN, the invoice is attributed to your account and the VAT amount is credited to your input VAT for that tax period.

The flow looks like this:

Supplier transmits an eTIMS invoice with your KRA PIN in the “Buyer PIN” field
KRA validates the invoice and posts it to the eTIMS platform within minutes
KRA’s matching engine links the invoice to your VAT ledger within 24 hours
The invoice appears on your auto-populated purchases CSV next time you download it
The VAT amount is summed with all other purchases to form your input VAT credit for the period

The implication: Your input VAT claim is essentially passive. You do not enter input VAT - KRA populates it based on supplier transmissions. The action is on the supplier side: get them to transmit with the right PIN. See our input VAT deduction guide for the full supplier-chase workflow.

Why the Supplier Must Transmit - and What Blocks You

The single biggest reason businesses under-claim input VAT: suppliers did not transmit the eTIMS invoice. The paper invoice you have is irrelevant to KRA - it must be on the eTIMS platform to count.

Four common supplier failures:

Supplier is not eTIMS-registered

Some small suppliers (especially informal service providers, freelancers, sole traders) are not eTIMS-registered. They issue paper or PDF invoices. You cannot claim input VAT on these - the VAT Act requires an eTIMS-compliant invoice. The only fix: change to a VAT-registered supplier, or accept the loss of input VAT.

Supplier transmitted late

Supplier issued the invoice on the 18th of August but transmitted it on the 25th. The purchase appears on your August CSV only if it was transmitted before KRA's auto-population cutoff (usually the 17th-18th). Late transmissions roll to the next period's CSV. You can claim the input VAT in the next period - within the 6-month window.

Supplier captured your PIN wrong

Supplier entered your PIN with one wrong digit. KRA matched the invoice to the wrong PIN - your supplier's invoice exists but on someone else's ledger. Fix: ask the supplier to issue a credit note (against the wrong PIN) and a new invoice (with your correct PIN). The credit note and new invoice both post to your ledger.

Supplier is not VAT-registered

If your supplier is not VAT-registered, they cannot issue a VAT-compliant eTIMS invoice. The purchase is not eligible for input VAT claim at all - there is no VAT to claim. Common examples: informal landlords, freelance sole traders below the VAT threshold. Either accept the no-claim, or shift to a VAT-registered supplier.

The 6-Month Claim Window

The VAT (General) Regulations allow you to claim input VAT within 6 months of the invoice date. This is a generous window - it means you do not lose the input VAT if a supplier’s invoice arrives late or if you discover an unclaimed purchase months later.

The rule in practice:

Invoice dated 15 January 2026 can be claimed in any VAT return filed between January and July 2026 - the month of claim does not have to match the invoice date
Invoice dated 15 January 2026 claimed on the August 2026 return (filed 20 September) - this is past the 6-month window. The claim is rejected.
The 6-month clock starts from the invoice date, not the transmission date - if the supplier transmitted late, you still have 6 months from the original invoice date to claim

The 6-month rule does not extend the 20th deadline

The 6-month rule lets you claim a specific older invoice on a later return. It does not let you file a return late. The August return is still due on 20 September regardless of whether you are claiming an invoice from February or July on it. Late filing triggers the KES 10,000 penalty.

Adding Missing Purchases Manually

When a supplier transmitted the eTIMS invoice with your correct PIN but it did not appear on your auto-populated CSV (usually due to a late transmission or a KRA matching glitch), you can add it manually.

The manual addition workflow:

01
Confirm the supplier actually transmitted
Ask the supplier to send you the eTIMS invoice confirmation (the page that shows the QR code and server confirmation code). If they cannot produce this, the invoice was not transmitted - you cannot add it manually. Have them transmit first.
02
Get the supplier's invoice details
You need: supplier name, supplier KRA PIN (11 digits), invoice number, invoice date, and the VAT amount charged. These all appear on the eTIMS-compliant invoice. Without any of these, you cannot add the purchase.
03
Open the auto-populated CSV in iTax
Log into iTax, go to Returns > File Return > VAT, select the period. Download the CSV. Open in Excel or Google Sheets. The CSV has a 'Purchases' section at the bottom - the existing auto-populated purchases are listed there.
04
Add the missing purchase as a new line
Below the existing auto-populated lines, add a new row with: Supplier PIN, Invoice Number, Invoice Date, VAT Amount. Save the CSV. Do not modify any existing lines - KRA compares the modified CSV against the auto-populated version and rejects wholesale changes.
05
Upload the modified CSV back to iTax
On the file return page, upload the modified CSV. iTax processes the upload and shows a confirmation page with the new input VAT total. Verify the new total reflects your addition. Submit the return.
06
Keep the supplier's original eTIMS invoice for 7 years
KRA may request proof of any manually-added purchase during an audit. The original eTIMS-compliant invoice (with the QR code and server confirmation code) is your proof. Without it, KRA may reverse the input VAT credit.

Related: For the complete workflow with screenshots and CSV field reference, see our input VAT deduction guide and our auto-populated VAT return guide.

Fraud - What to Do About Unrecognized Purchases

Sometimes your auto-populated CSV shows a purchase you do not recognize - a supplier you have never heard of, an invoice number that is not in your records, an amount that does not match any expense you can identify.

Two possible scenarios:

Supplier made a data-entry error

The supplier accidentally used your PIN instead of another customer's PIN. Common for businesses with similar PINs (one digit difference). Contact the supplier (their name and PIN are on the CSV) and ask them to issue a credit note against the wrong invoice, then re-transmit with the correct buyer PIN. The credit note will appear on your CSV as a negative purchase.

Someone is using your PIN fraudulently

More serious: a fraudster is using your KRA PIN to generate fictitious eTIMS invoices. They intend to either (a) claim input VAT on your account to inflate your refund, then file a refund request and steal the cash, or (b) launder money through your account. Either way, do NOT include these purchases in your input VAT claim.

If you suspect fraud, the action steps are:

Flag the unrecognized purchases on iTax before filing - there is an option to mark a purchase as “unrecognized”
File the return without claiming the unrecognized input VAT - you cannot be penalized for not claiming VAT you did not incur
Report to KRA Contact Centre on 020 499 9999 - they will open an investigation
Change your iTax password immediately - if a fraudster can transmit to your PIN, they may also have access to your iTax account
Engage a tax agent to handle KRA correspondence during the investigation - you do not want to say the wrong thing

Suspect fraudulent use of your KRA PIN?

We have handled PIN fraud cases for Kenyan SMEs. We coordinate the KRA report, the iTax security reset, and the dispute filing - end to end. Send us the unrecognized purchase lines by email.

Report PIN Fraud

Frequently Asked Questions

How does the auto-populated return credit my input VAT?

The auto-populated return credits input VAT to your account when a supplier transmits an eTIMS invoice with your correct KRA PIN. The supplier's eTIMS invoice appears in your purchases CSV within 24 hours of transmission. Each line shows: supplier name, supplier PIN, invoice number, date, and VAT amount. The total of these VAT amounts becomes your input VAT credit for the period - you do not enter them manually.

What if my supplier did not transmit the eTIMS invoice?

If the supplier did not transmit an eTIMS invoice, the purchase does not appear in your auto-populated CSV and you cannot claim input VAT on it - even if you have a paper invoice. The VAT Act requires input VAT claims to be supported by an eTIMS-compliant tax invoice. The fix: ask the supplier to transmit the eTIMS invoice with your correct PIN. Once transmitted, it appears in your CSV and you can claim the input VAT in that period (or the next period if transmitted after the current period closes).

Can I claim input VAT from a supplier invoice received months ago?

Yes - the 6-month rule. You can claim input VAT on a supplier's eTIMS-compliant invoice within 6 months of the invoice date. If the supplier transmitted the invoice on January 15 and you file your August return on September 20, you can still claim the input VAT in the August return. The purchase line appears on the August CSV (transmission date basis), not the January CSV. This is why reconciling supplier invoices monthly is essential.

What is the difference between claiming input VAT on the auto-populated return vs manually?

On the auto-populated return, input VAT is pre-filled from KRA's record of supplier transmissions - you do not enter it manually. You can ADD missing purchases manually if the supplier transmitted but the invoice did not appear on your CSV (e.g., late transmission, wrong PIN). Manual additions require: supplier name, supplier PIN, invoice number, date, and VAT amount. Keep the original eTIMS-compliant invoice as proof - KRA may request it during an audit. See our input VAT deduction guide for the full manual addition workflow.

What if a supplier transmitted an eTIMS invoice I do not recognize?

If a supplier transmitted an eTIMS invoice to your PIN and you did not make that purchase, two scenarios: (1) the supplier made a data-entry error and used your PIN by mistake - contact them to issue a credit note; (2) someone is fraudulently using your PIN to claim input VAT on fictitious purchases. Either way, do NOT include that invoice in your input VAT claim - flag it on iTax as 'unrecognized purchase' before filing. See our input VAT deduction guide for fraud prevention tips.

How can I maximize my legitimate input VAT claim?

Three habits: (1) give your correct KRA PIN to every supplier - especially fuel stations, utilities (KPLC, Safaricom), landlords, and service providers; (2) request eTIMS-compliant invoices from every supplier and verify your PIN appears correctly; (3) monthly reconciliation - download your purchases CSV from the auto-populated return and compare against your local expense records. Any missing supplier invoice should be followed up within the 6-month window. See our input VAT deduction guide for the full checklist of qualifying expenses.