Baseline Macro-Fiscal Parameters and Revenue Mobilisation

The fiscal architecture of Bangladesh continues to operate under severe structural constraints, defined by persistent revenue underperformance and rigid expenditure obligations. According to data from the National Board of Revenue and CEIC as of Dec 2024, tax revenue as a share of GDP stands at 7.5 percent. This single metric highlights a critical vulnerability in the domestic macro-fiscal framework. An economy with an output base that generates tax receipts at 7.5 percent of GDP lacks the internal resource mobilisation capacity required to finance physical infrastructure, public health, education, and social safety nets without continuous recourse to domestic and external borrowing.

The immediate consequence of an inadequate revenue intake is demonstrated in the fiscal deficit as a share of GDP, which was recorded at 4.7 percent in the Ministry of Finance revised budget FY2023-24. Although a fiscal deficit below five percent of national output is frequently viewed as a sustainable threshold in cross-country benchmarking, its composition and financing structure create distinct systemic pressures when the underlying tax base is constrained. When the overall tax-to-GDP ratio is 7.5 percent, a budget deficit of 4.7 percent of GDP indicates that total tax receipts cover only a modest fraction of state expenditures. The state is effectively financing a substantial portion of its public administration, civil service payroll, developmental projects, and debt service through borrowing rather than non-debt revenue streams.

Sovereign solvency indicators remain anchored by public debt as a share of GDP, which stood at 40.1 percent according to World Bank and IMF assessments in 2024. In aggregate terms, public debt at 40.1 percent appears manageable when evaluated against international debt-distress thresholds. However, sovereign debt distress is fundamentally a function of cash-flow solvency rather than debt-to-output ratios alone. Because sovereign obligations must be amortized and serviced via government revenues rather than total domestic output, the low tax yield magnifies the debt service burden on the national exchequer. Total external debt stood at 100.4 billion dollars, according to the World Bank International Debt Report 2024. Servicing and refinancing this stock of external obligations requires reliable access to foreign exchange and fiscal revenues, creating an urgent policy imperative to expand domestic resource mobilisation.

Structural Drivers of Low Domestic Revenue Mobilisation

The structural stagnation of the tax-to-GDP ratio at 7.5 percent reflects entrenched administrative, institutional, and legal arrangements within the domestic revenue collection apparatus. Revenue mobilisation is heavily skewed toward indirect taxation, predominantly value-added tax, supplementary duties, and import-stage tariffs collected at points of entry. Direct tax collection, comprising personal income tax and corporate income tax, remains severely suppressed by high compliance frictions, narrow registration coverage, and extensive administrative discretion.

The domestic tax base is fragmented by widespread statutory regulatory orders, sector-specific exemptions, and targeted tax holidays. The proliferation of discretionary tax expenditures, designed to foster industrialisation and attract capital formation across selected manufacturing enclaves, has eroded the statutory tax base. Special economic regimes, duty drawbacks, and accelerated depreciation allowances are routinely extended across multiple industries without rigorous, periodic cost-benefit evaluations. These carve-outs institutionalize tax avoidance and create arbitrage opportunities between formal, compliant corporate entities and informal, sheltered operations.

Direct personal income taxation faces systemic administrative impediments. The universe of active, tax-filing individuals represents only a minute fraction of the economically active labor force. While modern electronic tax identification numbers have expanded nominal registrations, the volume of submitted returns that yield positive net revenue remains low. The enforcement framework suffers from limited operational integration across public databases. Asset registries, land administration deeds, vehicle ownership records, and commercial banking transaction records operate in separate administrative silos. Without automated data-matching protocols, tax authorities rely on manual reviews and sporadic audits, which increases informal negotiation between tax assessors and corporate taxpayers while failing to capture real personal wealth and speculative gains.

Corporate taxation exhibits similar distortions. A significant volume of corporate direct tax receipts is captured through advance income tax and withholding tax mechanisms imposed at the transaction stage. While advance withholding secures immediate cash inflows for the National Board of Revenue, it functions as a quasi-indirect tax, burdening enterprise liquidity and driving up the cost of doing business. Firms in formal supply chains absorb these levies regardless of net operational profitability, while informal enterprises bypass withholding channels entirely. Furthermore, international transactions and cross-border trade expose the tax base to aggressive transfer pricing and trade misinvoicing, challenges that existing audit units within the revenue bureaucracy are under-resourced to address.

Deficit Financing Dynamics and Domestic Banking Pressures

Managing an overall fiscal deficit of 4.7 percent of GDP in a low-revenue environment forces sovereign debt managers to balance domestic banking sector stability against higher debt-servicing costs. The budget deficit recorded in the Ministry of Finance revised budget FY2023-24 has traditionally been financed through two domestic conduits: direct borrowing from the commercial banking system and the issuance of retail sovereign instruments, specifically national savings certificates, supplemented by external project assistance.

Recourse to domestic commercial bank borrowing to finance fiscal shortfalls introduces substantial risks to the broader macro-financial landscape. When the sovereign absorbs a growing share of loanable funds from deposit money banks, private sector credit growth is inevitably constrained. Commercial banks face asset allocation trade-offs, frequently choosing risk-weighted, zero-default sovereign paper over private enterprise lending. This dynamic distorts the domestic credit market, dampens private investment in productive capital assets, and reduces overall industrial productivity.

Financing the deficit through national savings certificates presents an alternative set of structural trade-offs. While retail non-bank borrowing mobilises household savings without directly expanding broad money supply, these instruments historically carry administered yields that exceed standard commercial bank deposit rates. This creates persistent distortions in retail savings markets, complicates monetary policy transmission, and inflates the government's domestic interest expenditure. The resulting domestic debt-service bill consumes an increasingly large share of annual tax revenues, establishing an adverse feedback loop: low tax collection necessitates debt financing, which inflates the sovereign interest burden, further exhausting the fiscal space required for productive public investments.

The sovereign-bank nexus also exposes domestic commercial lenders to direct fiscal risks. As sovereign securities accumulate on commercial bank balance sheets, fluctuations in domestic yield curves directly influence bank asset valuations, capital adequacy buffers, and market liquidity. If fiscal deficits persist near 4.7 percent of GDP without an expansion in non-debt receipts, domestic debt servicing will progressively absorb the revenue generated by the 7.5 percent tax-to-GDP intake, threatening fiscal sustainability.

Public Debt Sustainability and External Vulnerability Profiles

At 40.1 percent of GDP, according to World Bank and IMF 2024 evaluations, the gross public debt position of Bangladesh remains within bounds that are conventional for emerging markets. However, analyzing public debt exclusively as an output ratio obscures underlying liquidity risks. The state does not service debt out of gross domestic product; it services debt out of government receipts. When evaluated against the tax revenue ratio of 7.5 percent of GDP, the public debt stock of 40.1 percent of GDP reflects a elevated debt-to-revenue ratio, which leaves sovereign balance sheets sensitive to external and domestic shocks.

The total external debt volume of 100.4 billion dollars, documented in the World Bank International Debt Report 2024, adds an external vulnerability dimension to the sovereign profile. Historically, the external debt portfolio was characterized by long maturities, concessional terms, and low nominal interest rates offered by multilateral development partners. However, external financing requirements have increasingly included non-concessional commercial loans, bilateral project credits, and export credit agency facilities to fund large-scale transport, power, and logistical infrastructure.

Non-concessional and bilateral external liabilities carry shorter grace periods, compressed amortization schedules, and market-linked interest rates. Servicing external obligations requires the physical generation of sovereign fiscal revenues, converted into foreign currency via foreign exchange reserves. When import compression policies, export fluctuations, or remittance shifts strain sovereign foreign exchange reserves, meeting debt service on an external debt stock of 100.4 billion dollars increases foreign exchange pressures. Furthermore, exchange rate adjustments increase the local-currency cost of servicing external principal and interest, directly worsening the fiscal deficit position.

Under these conditions, sovereign credit ratings become sensitive to external debt metrics and sovereign revenue ratios. If external debt servicing obligations peak alongside a static domestic tax yield of 7.5 percent of GDP, fiscal policymakers will face restricted commercial market access and higher borrowing costs. Mitigating external sovereign risk requires maintaining prudent reserve coverage, rationalizing commercial external borrowing, and accelerating domestic tax reforms to stabilize the public debt trajectory.

Strategic Reform Levers and Policy Sequencing

Addressing the structural fiscal deficit of 4.7 percent of GDP and modernizing public balance sheet management requires sequenced policy interventions across three core areas: tax policy rationalization, administrative restructuring, and domestic debt management.

First, statutory tax policy must be divorced from discretionary administrative intervention. A fundamental reform involves the institutional separation of tax policy formulation from operational tax collection within the National Board of Revenue. Consolidating tax policy within a specialized macro-fiscal analysis unit in the Ministry of Finance would eliminate the conflict of interest inherent in an agency simultaneously setting revenue targets, granting discretionary exemptions, and executing tax audits. All existing statutory regulatory orders and discretionary corporate tax incentives must be subjected to mandatory, costed sunset clauses. Transparent tax expenditure budgets should be presented alongside the national budget to expose the fiscal costs of special economic privileges.

Second, the operational tax architecture requires digitization and automated compliance integration. Broadening the direct personal and corporate tax base beyond the current low baseline necessitates mandatory data linkage across the National Board of Revenue, commercial banking institutions, corporate registries, and digital municipal land records. Transitioning from physical tax assessments to objective, algorithm-driven audit selection protocols will lower administrative compliance costs, mitigate corrupt incentives, and curb informal tax negotiations. In parallel, indirect tax administration must be strengthened through the comprehensive rollout of automated electronic fiscal devices for urban retail enterprises, ensuring that value-added taxes collected from consumers are deposited into the treasury.

Third, sovereign debt management requires strategic overhaul to preserve balance sheet health while public debt stands at 40.1 percent of GDP and external obligations remain at 100.4 billion dollars. The authorities must establish an integrated Public Debt Management Office to manage domestic and external debt operations holistically. Administered retail debt instruments must be aligned with prevailing market yields to eliminate distortions in domestic deposit pricing and reduce sovereign interest expenditure. On the external financing side, sovereign project authorities must maintain strict selectivity, prioritizing high-return concessional financing over bilateral commercial borrowing for public infrastructure. Ultimately, long-term sovereign solvency depends on raising the domestic tax-to-GDP ratio substantially above 7.5 percent, ensuring that fiscal deficits are kept on a sustainable trajectory.