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First Principles

Building Pocket Taxation From First Principles

Tax should behave like a continuous, legible part of everyday money, not a mysterious annual event. Your phone becomes a living model of your relationship with the state.

The Reality of Small Business Compliance

Most small businesses don’t fail tax compliance because they’re malicious. They fail because the system is fragmented, confusing, and disconnected from their daily operations.

We started with a different assumption: once tax is continuous and legible, it can also become transparent and accountable. You should be able to see not only what you owe, but how government is performing with what it collects.

Continuous

Not a once-a-year scramble, but a daily pulse.

Legible

Plain language instead of dense legal jargon.

Transparent

See exactly where every Naira goes.

Accountable

A verifiable trail from reality to filing.

Our Core Principles

These five pillars define how we rethink taxation for the modern world.

Single Source of Truth About Money

Tax is downstream of reality. If your financial reality is scattered across apps, screenshots, and memory, any tax result is guesswork. Blackgoat starts with one unified view of your financial life—a shared ledger for you, your business, and eventually your government.

Unified income and expense logging
Automatic receipt and invoice parsing
Continuous audit trail of all corrections
One shared book for all stakeholders
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Life Events as a Canonical Tax Story

Blackgoat flips the script. Instead of starting with 'Section X, Subsection Y' of a tax act, we start with who you are and how you live. We map your real-world life events onto the law, creating a structured description that the tax engine can understand.

Context-aware data collection
Seamless mapping from life to law
Reusable tax stories for forecasting
Verified tax history for future products
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Rules as Living Policy, Not Hard-Coded Formulas

Blackgoat assumes policy must move faster than code. We separate the math engine from the parameters that describe the law. This allows for data-driven updates to bands, rates, and exemptions without rewriting the entire system.

Parameter-driven tax calculation
Historical record of rule applications
Instant updates for new finance acts
Predictive modeling for policy changes
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What You Saw is Exactly What Got Filed

We close the trust gap. Every calculation saves a complete snapshot of your inputs, the rule version used, and the detailed breakdown. When you file, we don't 're-guess'; we reuse the exact snapshot that produced your result.

Cryptographic-style integrity
Verifiable trail for every filing
Simplified audits and dispute resolution
Faithful rendering of on-screen results
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Compliance as a Graph, Not a Flat Table

Most small businesses don't fail tax compliance because they're malicious; they fail because compliance is a complex, disconnected web of obligations. We model these obligations as a graph, providing context-aware guidance that adapts to your reality.

Contextual obligation tracking
Interconnected tax dependencies
Proactive compliance alerts
Intelligent risk assessment
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Compliance as a Graph

Traditional tax tools see obligations as a flat list of deadlines. Blackgoat sees them as an interconnected web of life events, business activities, and legal requirements.

Contextual Dependencies

Changing your business address automatically triggers a cascade of local government levy updates.

Proactive Risk Mapping

The system identifies potential compliance gaps before they become official penalties.

Mutual Transparency

A shared graph that both you and the state can trust as the single source of truth.

The Future of Governance

Pocket taxation isn't just about convenience; it's about integrity, transparency, and accountability. We're building the infrastructure for a society where tax is a clear, mutual agreement between citizens and the state.

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
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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.

is a Product of Grid Services a Child company of Marvengrey Technologies Nigeria Ltd.