Indonesia faces a striking fiscal paradox: despite being home to the world’s largest Muslim population (87.2%), its Tax-to-GDP Ratio remains stagnant at a mere ±10% — far behind the OECD average of 33.9%. This research by Dr. Bahori Ahoen, S.H., S.E., M.H., M.E. (Universitas Tazkia) proposes a radical legal breakthrough to resolve this systemic issue.
About This Journal
The core argument is that the root cause of Indonesia’s low tax compliance is not economic inability, but theological and psychological resistance. Muslims are caught in a “Double Burden” dilemma — paying both Zakat (2.5%, a religious obligation) and conventional taxes (up to 35%), creating a sense of injustice that drives widespread tax avoidance.
This study proposes that for Muslim citizens, tax obligations should be fully replaced by Zakat through the legal principle of Lex Specialis Derogat Legi Generali — not merely used as a tax deduction.
Key areas of focus:
- The Legal Gap: Drafting a National Sharia Fiscal Bill where Zakat payment serves as full legal substitution for income tax liability.
- The Economic Gap: Proving through simulation that the zakat model (2.5% on net assets) generates more state revenue than the conventional tax system.
- The Justice & Governance Gap: Designing institutional governance to prevent corruption of zakat funds within the state budget.
The Compliance Paradox: Lower Rate, Higher Revenue
The most striking finding of this research is the “Compliance Paradox” — a direct antithesis to conventional economic theory:
| Component | Conventional Tax | Sharia Fiscal (Zakat) |
|---|---|---|
| Main Object | Income & Consumption (Flow) | Wealth & Productive Assets (Stock) |
| Calculation Basis | Rp 22,000 T (GDP, formal sector only) | Rp 52,200 T (87% × Rp 60,000 T national wealth) |
| Effective Rate | 10–11% (real tax ratio) | 2.5% (flat Zakat rate) |
| Compliance Level | Low (±60–70%) | Very High (95%, faith-driven) |
| Revenue Estimation | ± Rp 2,300 Trillion | ± Rp 2,610 Trillion |
| Result | — | SURPLUS +Rp 310 Trillion |
The key insight: the Zakat system taxes accumulated wealth (Stock) rather than just income (Flow), creating a calculation base 2.5× larger than the conventional tax base. Combined with near-total voluntary compliance driven by religious faith, aggregate state revenue actually increases despite the dramatically lower rate.
Three Revenue Drivers Beyond Conventional Tax
- Penalty on Idle Assets: Idle speculative land, often subject only to minimal property tax (PBB), becomes subject to zakat — unlocking trillions in untapped potential.
- Reaching the Shadow Economy: 40% of Indonesia’s economy is informal and virtually untaxable. With Zakat’s religious approach, this sector pays voluntarily out of spiritual obligation.
- Asset vs. Profit Basis: Companies routinely manipulate profit reports, but physical assets (buildings, inventory, fleets) are nearly impossible to hide.
Proposed Institutional Governance
The study recommends a Single Window System with strict sharia oversight:
- Directorate General of Zakat and Sharia Fiscal (DJ-ZFS): Established under the Ministry of Finance as the collection operator.
- National Sharia Council (DSN-MUI): Serves as the independent sharia compliance auditor.
- Segregated Account Policy: Zakat funds must be deposited in Sharia State Treasury Accounts and are legally prohibited from being used to pay interest on state debt — only for direct public expenditure (infrastructure, education, health, social security).
Why It Matters
This research offers a constitutional middle ground — a Value-Based Pancasila State — where Islamic law is adopted into positive state law without changing the nation’s ideology. It proves that sharia compliance and national fiscal independence can coexist harmoniously within the framework of the Unitary State of Indonesia (NKRI).
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