Here’s a clear, step‑by‑step guide to filing your Personal Income Tax (PIT) online for Osun Internal Revenue Service so you don’t have to physically visit their office. This applies to individual residents (salaried or self‑employed) who must file before March 31 each year under the Personal Income Tax Act

🧾 1. Confirm What You’re Filing (Who Must File)

You must file PIT returns if:

You earn income from employment (PAYE) — salary, allowances, bonuses.

You are self‑employed or earn income outside employment (Direct Assessment).

You earn from other sources (rental income, side gig, consultancy, etc.).

Every taxpayer is obligated to file annual returns by March 31st of each year for income earned in the preceding year

🔑 2. Get Your Taxpayer Identifiers

‣ Tax Identification Number (TIN)

If you don’t have a TIN:

Visit the JTB TIN application via the OIRS website.

Complete the individual TIN application form online.

Submit and download/print your TIN — this is required for filing

Note: Some state e‑payment portals also let you apply for a TIN during registration.

‣ Payer ID

This is a unique reference used for payment and filings.

If already registered, you can retrieve your Payer ID using your phone number or from a prior Automated Revenue Receipt (ARR).

If not registered, you must create a profile on the OIRS tax portal (next step).

🌐 3. Register / Create Your Online Tax Profile

Use the state’s electronic tax portal to register yourself if you haven’t already:

🔗 Registration portal:

➡️ https://osun.electroniccollectionsecg.com/taxes/apply

Steps:

Open the link and fill in the details (name, contact, TIN, NIN/BVN if required).

Submit and wait for confirmation; you’ll receive your Payer ID and login credentials.

📌 Save these securely — you’ll need them for payment and filing.

💸 4. Calculate and Pay Any Tax Due

Before you submit your return, determine your tax. For individuals:

Salaried workers under PAYE: your employer typically deducts your tax monthly.

Self‑employed or direct assessment: you must compute your gross income and liability yourself.

Payments can be made online through the same tax portal or affiliated e‑payment system using your Payer ID, Agency & Revenue Codes, and correct amount

Ensure you keep the payment receipt(s) — they’ll support your filing.

📄 5. Prepare Your Annual Tax Return

‣ Download the Tax Return Template

Go to the Annual Returns / Individual Annual Tax Returns section on the OIRS site and download the Excel return template.

Template includes space for:

Osun Internal Revenue Service

PAYE income/tax (if employed)

Direct assessment (self‑employment income)

Withholding tax (WHT) credits

Relief/deductions as allowed by law

Fill the form completely and accurately.

📤 6. Submit Your Return Online

There are two ways to submit:

Method A — Online Upload (Preferred)

Log into the tax portal using your credentials.

Go to the Annual Returns / Individual Tax Returns section.

Upload your completed Excel form.

Attach evidence of payments and identification as required.

Submit and retain the acknowledgment/confirmation.

Ideally this is fully online without going to a tax office.

Method B — Email Submission

If online upload isn’t functioning:

Attach your completed Excel template.

Email to: irsosun2@gmail.com or irsosun@gmail.com (as instructed on the annual returns page

Include your contact details and Payer ID.

📑 7. Confirm Receipt and Keep Proofs

After submission:

Ensure you receive a submission reference or acknowledgment email.

Store copies of:

Return form

Payment receipts

Email confirmation

These serve as proof of compliance if asked later.

⏱️ Deadlines & Penalties

Deadline: March 31st each year for individual PIT returns.

Filing late or non‑filing may attract penalties under State tax law — typically fines for individuals

⚠️ Quick Tips

Always complete every section of your annual return.

Upload all payment receipts and supporting documents.

Use the correct Payer ID on all online transactions.

If unemployed or with no income in the year, you may still be required to file a nil return.

If you need the direct links for TIN application, registration portal, or Annual Returns download, let me know and I’ll list them clearly.

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Here is how to file your Abia State tax correctly (and avoid penalty). I’ll also give you the official website since you said you couldn’t find it.

Abia State Tax Filing — Step-by-Step Guide

Step 1: Go to the Official Abia Tax Website

Use the official portal below:

Official Portal: https://www.abia.tax

(This is the official Abia State Internal Revenue Service portal for tax information and payment.)

You can also try:

https://absirs.ab.gov.ng (Another official Abia tax contact listed in government guides

Step-by-Step: How To File Abia State Tax

Step 1 — Register for Tax ID (If you don’t have one)

You must first get:

Tax Identification Number (TIN) OR

ABSIN (Abia tax ID)

This is required before filing.

Step 2 — Prepare Your Information

Get ready:

Full Name

Phone number

Address

Occupation

Income details (salary/business/side hustle)

Step 3 — Fill Annual Return

Fill your Annual Tax Return (for last year income)

Deadline normally:

March 31 every year

Step 4 — Pay Tax

After filling:

Generate payment

Pay through bank or online

Print receipt

Step 5 — Submit Return

Submit your return online or at Abia IRS office.

If You Cannot File Online (No Problem)

You can also go physically to:

Abia State Internal Revenue Service

Abia State Board of Internal Revenue

AbiaIRS

They will help you free (no agent needed).

Important (To Avoid Penalty)

Even if:

You didn’t earn much

You just started working

You are self-employed

Still file zero return to avoid penalty.

Let me help you better

Tell me:

Are you salaried worker or business person?

Do you have Tax ID already?

Are you living in Abia now?

I’ll guide you step-by-step personally so you don’t pay penalty.

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If your husband registered a company with the Corporate Affairs Commission (CAC) in 2023, then he is required to file Annual Returns every year — even if the business made little or no profit.

This Annual Return is different from tax filing.

There are two separate filings:

CAC Annual Return (Company status update)

Tax Return (FIRS / State) (Company tax filing)

I’ll guide you step-by-step.

PART 1 — Filing CAC Annual Return (Very Important)

Who Must File?

Your husband must file CAC Annual Return because:

He registered a business in 2023

Annual return is due every year

When to File

First Annual Return: 18 months after registration

After that: Every year

Since he registered in 2023, he is likely due now.

How To File CAC Annual Return (Step-by-Step)

Step 1: Go to CAC Portal

Visit: https://post.cac.gov.ng

Step 2: Login

Use email used during CAC registration

Or create account if not available

Step 3: Search Company Name

Click “Public Search”

Enter company/business name

Step 4: Select “File Annual Return”

Choose Annual Return Filing

Fill in required details

Step 5: Fill Basic Information

You will provide:

Business address

Nature of business (wrought iron fabrication)

Owner/director details

Business status

Step 6: Pay Filing Fee

Approximate CAC fees:

Business Name → ₦3,000 – ₦5,000

Limited Company → ₦5,000 – ₦10,000

(Depends on company type)

Step 7: Submit and Download Receipt

Done.

PART 2 — Company Tax Return (Also Required)

After CAC Annual Return, he should also file Company Tax Return with:

Federal Inland Revenue Service (FIRS)

This is required even if business made no profit.

How To File Tax Return

Go to: https://taxpro.firs.gov.ng

Register company with:

CAC Certificate

Company email

Phone number

File:

Company Income Tax (CIT)

VAT (if applicable)

Withholding Tax (if applicable)

Important (Very Important)

If your husband does not file CAC annual return:

1. Company may be marked inactive

Late penalty applies

Company may be struck off register

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Yes — every state in Nigeria has its own tax authority and filing link.
Even though your TIN is national, Personal Income Tax (PIT) is filed through State Internal Revenue Services (SIRS) depending on where you reside. �
siao.ng
Below are credible official links for all 36 states + FCT.
🇳🇬 Federal Capital Territory
Federal Capital Territory Internal Revenue Service
Website: https://fctirs.gov.ng⁠�
Self-service portal available for filing and verification �
FCT Internal Revenue Service
South-West States
Lagos State Internal Revenue Service — https://lirs.gov.ng⁠�
Ogun State Internal Revenue Service — https://portal.ogetax.ogunstate.gov.ng⁠�
Oyo State Internal Revenue Service — https://bir.oyostate.gov.ng⁠�
Ondo State Internal Revenue Service — https://odirs.ng⁠�
Osun State Internal Revenue Service — https://irs.os.gov.ng⁠�
Ekiti State Internal Revenue Service — https://ekitistaterevenue.com⁠� �
NRS Portal Guide
South-South States
Rivers State Internal Revenue Service — https://riversbirs.gov.ng⁠�
Delta State Internal Revenue Service — https://deltairs.com⁠�
Edo State Internal Revenue Service — https://eirs.gov.ng⁠�
Akwa Ibom State Internal Revenue Service — https://akirs.ak.gov.ng⁠�
Cross River State Internal Revenue Service — https://crirs.crossriverstate.gov.ng⁠�
Bayelsa State Internal Revenue Service — https://bir.by.gov.ng⁠� �
NRS Portal Guide
South-East States
Imo State Internal Revenue Service — https://iirs.im.gov.ng⁠�
Anambra State Internal Revenue Service — https://anambrastate.gov.ng/irs⁠�
Abia State Internal Revenue Service — https://abiairs.gov.ng⁠�
Enugu State Internal Revenue Service — https://esirs.en.gov.ng⁠�
Ebonyi State Internal Revenue Service — https://ebonyistateirs.gov.ng⁠�
👉 Example: Imo State IRS provides self-service login, TCC verification and tax filing portal. �
iirs.im.gov.ng
North-Central States
Kwara State Internal Revenue Service — https://kwirs.kw.gov.ng⁠�
Kogi State Internal Revenue Service — https://kgirs.kg.gov.ng⁠�
Benue State Internal Revenue Service — https://birs.be.gov.ng⁠�
Nasarawa State Internal Revenue Service — https://irs.na.gov.ng⁠�
Niger State Internal Revenue Service — https://nsirs.ng⁠�
Plateau State Internal Revenue Service — https://psirs.gov.ng⁠�
North-West States
Kano State Internal Revenue Service — https://kirs.gov.ng⁠�
Kaduna State Internal Revenue Service — https://kadiris.ng⁠�
Katsina State Internal Revenue Service — https://katsinairs.gov.ng⁠�
Sokoto State Internal Revenue Service — https://sirs.gov.ng⁠�
Kebbi State Internal Revenue Service — https://kebbisirs.gov.ng⁠�
Zamfara State Internal Revenue Service — https://zamfiris.gov.ng⁠�
North-East States
Borno State Internal Revenue Service — https://birs.bo.gov.ng⁠�
Yobe State Internal Revenue Service — https://yobesirs.gov.ng⁠�
Adamawa State Internal Revenue Service — https://adamawairs.gov.ng⁠�
Bauchi State Internal Revenue Service — https://birs.ba.gov.ng
Gombe State Internal Revenue Service — https://gombesirs.gov.ng
Taraba State Internal Revenue Service — https://tarabairs.gov.ng
Important Note
Some states allow online filing
Some states require physical walk-in
Some states offer hybrid (online + office visit)
This is why you noticed ASIN in Anambra — states operate independent tax systems.
siao.ng

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As a civil servant in Nigeria, getting your Tax Identification Number (TIN) is straightforward because it is usually linked to your BVN and employment records. You can obtain it either online or physically through FIRS/JTB offices.
I’ll give you a clear step-by-step process.
OPTION 1: GET TIN ONLINE (FASTEST METHOD)
Step 1: Go to the official TIN registration portal
Visit the Joint Tax Board (JTB) TIN portal:
https://tin.jtb.gov.ng
Step 2: Choose “Individual TIN Registration”
Select “Register for TIN (Individual)”
Step 3: Fill in your personal details
You will be required to enter:
Full name (as on BVN/NIN)
Date of birth
Phone number
Email address (if available)
Residential address
State of origin/residence
Step 4: Enter your BVN or NIN
Your BVN is very important (especially for civil servants)
It helps auto-generate your tax record
Step 5: Submit the form
Click Submit
The system will validate your details with your bank records
Step 6: Download or receive your TIN
If successful, your TIN will be:
Displayed instantly OR
Sent to your email/SMS
OPTION 2: GET TIN AT FIRS OR STATE IRS OFFICE (PHYSICAL METHOD)
Step 1: Go to nearest tax office
Federal Inland Revenue Service (FIRS) office OR
Rivers State Internal Revenue Service (RIRS) office
Step 2: Request TIN registration
Tell them:
“I want to register for Tax Identification Number as an individual civil servant”
Step 3: Fill registration form
You will be given a form to fill with:
Personal details
Employment details
Address
BVN/NIN
Step 4: Submit required documents
Usually required:
Valid ID (NIN slip, voter’s card, or driver’s license)
Letter of employment or staff ID (civil servants)
Utility bill (sometimes)
BVN printout (optional but helpful)
Step 5: Receive your TIN
Processing usually takes same day to a few days
You will be issued a TIN certificate or number
OPTION 3: AUTOMATIC TIN (VERY COMMON FOR CIVIL SERVANTS)
Many civil servants already have a TIN without knowing.
How to check:
Ask your HR/payroll unit
Check your salary slip (sometimes TIN is printed)
Or use JTB portal to “retrieve TIN”
IMPORTANT NOTES (FOR CIVIL SERVANTS)
1. You likely already have a TIN
Most government payroll systems already register staff automatically
2. You only need it for:
Opening business account
Investing in stocks/mutual funds
Loan applications
Business registration (CAC)
3. TIN is FREE
You should not pay anyone to generate it
SUMMARY
Fastest method:
Go to https://tin.jtb.gov.ng
Enter BVN + personal details
Submit
Receive TIN instantly or via SMS/email

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