Nigeria's Cleanest Way to Pay Tax
PiOe Blackgoat is a premier financial technology product developed by Marvengrey Technologies Nigeria Ltd. We're building the infrastructure for a transparent and compliant Nigeria, starting with making taxes as simple as sending a text.
Our Philosophy: Ruthless Compliance
At PiOe Blackgoat, we believe that tax compliance shouldn't be a nightmare. We combine deep local tax expertise with world-class technology to ensure you never have to worry about an LIRS or FIRS query again.
E-E-A-T Certified
"Every calculation on our platform is cross-verified against the latest Finance Acts and verified by ICAN and CITN qualified advisors."
Lead Tax Advisor
PiOe Compliance Team
Community Driven
Helping 10,000+ Nigerians navigate the complexities of PIT, CIT, and VAT.
Authoritative Content
Our deep-dive guides are the industry standard for Nigerian tax education.
Government Standard
Direct integrations and compliance mapping with major state revenue services.
Built for Nigeria, by Nigerians.
PiOe Blackgoat is an independent tax technology platform specifically engineered for the unique complexities of the Nigerian tax landscape (FIRS, LIRS, and SIRS).
Developed and maintained by Marvengrey Technologies Nigeria Ltd (also known as Marven Grey Technologies), our mission is to simplify compliance for every Nigerian citizen and business.
Please note that we are a distinct Nigerian entity, independent of and not affiliated with any international tax applications of similar names. Our focus remains 100% on serving Nigerian taxpayers with local expertise and government-compliant tools.
Ready for Stress-Free Taxes?
Join the movement of transparent, compliant taxpayers building a better Nigeria.
If you have a standard Personal Income Tax (PIT) return only (Salary/Employment income, and common reliefs such as Pension, NHF, NHIS, and Life Assurance), you can file seamlessly with Blackgoat Basic. Roughly 65% of Nigerian taxpayers are eligible for this standard filing category.
Examples of situations included in a Standard PIT Return:
- Employment Income (PAYE) from one or more employers
- Interest and Dividends (where WHT is final tax)
- Consolidated Relief Allowance (CRA)
- Pension Contributions (RSA)
- National Housing Fund (NHF) Contributions
- National Health Insurance Scheme (NHIS) Contributions
- Life Assurance Premiums
- Business Expenses (for specialized Self-Employed filings)
Blackgoat Advanced (for situations not included in Standard Return):
- Complex Capital Gains adjustments
- Foreign Income with double taxation treaty claims
- Complex Trust or Estate income
- Business Income requiring audited financial statements
Blackgoat Guarantees
100% Accurate Calculations Guarantee: If you pay a State Internal Revenue Service (SIRS) or NRS (formerly FIRS) penalty or interest because of a Blackgoatcalculation error, we'll pay you the penalty and interest. You are responsible for paying any additional tax liability you may owe. This guarantee is good for the lifetime of your tax return, defined as six years from the date you filed it.
Maximum Tax Savings Guarantee: If you get a larger refund or smaller tax due from another tax preparation method by filing an amended return, we'll refund the applicable Blackgoat purchase price paid. This guarantee is applicable to the specific tax year filed.
Audit Support Guarantee: If you receive an audit letter from a State Board of Internal Revenue or NRS (formerly FIRS) based on your Blackgoat individual or business return, we will provide one-on-one question-and-answer support with a tax professional. We will not represent you before the tax authority or provide legal advice unless you have purchased the Audit Defense add-on.
Satisfaction Guaranteed: You may use Blackgoat Online without charge up to the point you decide to print or electronically file your tax return. Printing or electronically filing your return reflects your satisfaction with Blackgoat Online.
* Prices are subject to change without notice. Internet access required; standard data rates apply to download and use mobile app.