Fiscal policy

Income Averaging and Transfer Program Eligibility for the Self-Employed Volatile self-employment income challenges fixed-period means testing; income averaging and multi-month rules help smooth eligibility for transfer programmes like SNAP, housing assistance, and Medicaid.

Inflation as Implicit Default: How Governments Erode Real Debt Value Inflation as implicit default describes how sustained price increases reduce the real burden of nominal government debt without a formal default, shifting losses from the government to creditors and savers.

Infrastructure Investment Multiplier How public investment in roads, bridges, and utilities generates multiplier effects differently than consumption spending, and why capacity constraints matter.

Interest Cost-to-Revenue Ratio A measure of fiscal stress that compares government debt service against tax revenue, highlighting vulnerability to rate shocks.

Interest Rate–Growth Differential and Government Debt Dynamics The interest rate–growth differential (r minus g) determines whether government debt stabilizes or explodes: when growth exceeds the interest rate, debt ratios fall without primary surpluses; when rates exceed growth, deficits tighten.

Intergenerational Equity and Fiscal Policy How deficit spending transfers debt burdens to future generations, what generational accounting measures, and debates over public investment.

Intergovernmental Fiscal Transfer Revenue-sharing or grant arrangements from a central government to sub-national governments to correct vertical fiscal imbalance and fund local services.

Intragovernmental Debt Intragovernmental debt is borrowing by one part of government from another, primarily from trust funds like Social Security. It represents internal IOUs rather than obligations to external creditors.

Intragovernmental Debt Explained Intragovernmental debt explained: government borrowing from its own trust funds and federal agencies, included in headline national debt but distinct from public debt.

Investment Accelerator Macroeconomic mechanism where increased demand amplifies business investment through expectations and capacity constraints.

Laffer Curve The inverted-U relationship between tax rates and government revenue, showing that higher rates don't always yield more revenue.

Lagging Indicator Economic data series that confirms business cycle trends after they have already occurred, used for retrospective analysis.

Local-Currency Sovereign Default Can a government default on its own local currency debt? Yes—and when it does, the causes and consequences differ sharply from foreign-currency default.

Local-Currency vs Foreign-Currency Sovereign Debt Compare risks, costs, and default dynamics when governments borrow in their own currency versus foreign currency they cannot print.

London Club An informal creditor group representing commercial banks negotiating rescheduled sovereign debt, operating outside official government channels to restructure non-Paris Club obligations.

Lump Sum Tax Effect How fixed taxes independent of income affect consumption and aggregate demand differently from income-based taxes.

Lump Sum vs Annuity Pension Payout Trade-Offs Comparing lump sum vs annuity pension payout: longevity risk, survivor benefits, and break-even age calculations for defined-benefit pension decisions.

Macro-Fiscal Framework: What It Is and Why It Matters A macro fiscal framework definition: the medium-term budget structure linking GDP forecasts, revenue projections, expenditures, and debt paths into a coherent plan.

Mandatory Spending Mandatory spending consists of government expenditures that are set by law and continue automatically. It includes entitlements like Social Security, Medicare, and Medicaid, and is not subject to annual appropriations.

Marginal Propensity to Consume The fraction of each additional dollar of income that households spend rather than save, determining the strength of demand-side fiscal stimulus and the magnitude of all economic multipliers.

Marginal Propensity to Import The fraction of additional income that households and firms spend on imported goods, which reduces the domestic fiscal multiplier.

Marginal vs Effective Tax Rate: What Is the Difference? The difference between marginal and effective tax rate: marginal is the rate on the last dollar earned, effective is total tax divided by total income.

Means-Testing Income and asset screens that target government transfers to the poor, creating administrative burden and work disincentives.

Medicaid Categorical Eligibility and ACA Expansion The ACA replaced narrow Medicaid categorical eligibility pathways with income-based coverage, expanding access and changing which groups qualify for federal safety-net healthcare.

Medium-Term Expenditure Framework A rolling multi-year budget plan that sets binding sectoral spending ceilings across a rolling three-to-five-year period.

Military Spending Multiplier Effect How defence procurement generates output multipliers, and why military spending's composition affects its economic impact differently than civilian spending.

Multilateral Creditor Preferred Creditor Status Why multilateral creditors have preferred creditor status in sovereign defaults: IMF, World Bank, and regional development banks have informal priority over private lenders.

Multiplier Effect on Unemployment: The Okun's Law Link How the fiscal multiplier effect on unemployment translates stimulus spending into job creation, with Okun's Law coefficients showing why gains differ across economies.

Multiplier Effect: Targeted vs Broad Stimulus Targeted vs broad fiscal stimulus multiplier effects differ based on marginal propensity to consume—lower-income transfers often generate larger output gains.

Multiplier-Accelerator Model Samuelson's dynamic framework linking consumption multipliers and investment accelerators to generate endogenous business cycles.

National Debt The national debt is the total amount of money a government has borrowed and not yet repaid. It accumulates from annual budget deficits and represents the government's outstanding obligations to creditors.

Negative Fiscal Multiplier: When Austerity Contracts GDP A negative fiscal multiplier occurs when spending cuts shrink GDP by more than the cut itself, a phenomenon documented during eurozone austerity from 2010 to 2012.

Negative Income Tax A unified cash transfer system that replaces welfare bureaucracies with a single subsidy that phases out as earnings rise.

Net Debt Net debt is government borrowing minus the financial assets the government holds, revealing the government's true net financial position. It is a more refined measure than gross debt.

Net Investment Income Tax: Threshold and Calculation The 3.8% surtax on investment income above specified thresholds: how it applies, who pays, and what income counts.

Net Present Value Debt Relief A method for calculating the true economic concession when creditors restructure sovereign debt by reducing its net present value rather than face value.

Notch vs Taper in Benefit Design Notch vs taper in benefit design: sharp eligibility cliffs versus graduated phase-outs, and their divergent effects on work incentives, fiscal cost, and poverty traps.

Notional Defined Contribution Pension Schemes Notional Defined Contribution pensions track individual contributions in virtual accounts earning a state-set return, without investing real funds; benefits depend on life expectancy.

Off-Budget Entity Federal programmes excluded from unified budget totals by law, masking the true deficit and affecting headline fiscal figures.

Official Creditor An official creditor is a government, central bank, or multilateral institution that has lent money to another government. Official creditors include bilateral creditors and multilateral creditors like the IMF and World Bank.

Omnibus Spending Bill An omnibus spending bill is a large legislative package that combines multiple appropriations bills into one, allowing Congress to authorize spending across several agencies and departments in a single vote.

Omnibus Spending Bill Explained An omnibus spending bill bundles multiple appropriations into a single vote, enabling Congress to fund government operations and avoid shutdowns.

Open Economy Multiplier The fiscal multiplier in a trade-open economy, where stimulus spending leaks into imports and is reduced by currency appreciation and capital flows.

Original Sin (Sovereign Debt) Why emerging-market governments borrow in foreign currency and why it amplifies default risk.

Original Sin in Sovereign Debt: Why Developing Countries Borrow in Foreign Currency Understand original sin in sovereign debt: why emerging economies cannot borrow in their own currency and how this amplifies exchange-rate vulnerability.

Output Cost of Sovereign Default How much sovereign default hurts GDP growth—empirical findings on output losses across episodes and transmission channels.

Pari Passu Clause The sovereign bond covenant requiring equal treatment of creditors, weaponised in Argentina's default litigation.

Paris Club Debt Bilateral government-to-government debt, coordinated through the Paris Club, a mechanism where creditor nations agree on collective restructuring terms.

Pay-As-You-Go Budget Rule PAYGO's statutory requirement that new mandatory spending or tax cuts be offset by spending reductions or revenue increases, preventing deficit expansion.

Pay-As-You-Go Pension Pension scheme in which current contributions from active workers directly fund current retirees' benefits, creating fiscal and demographic risk as population ages.

PAYGO Rule Statutory requirement that new mandatory spending or tax cuts be offset to prevent adding to the federal deficit.

Payroll Tax Wage-based levies that fund social insurance (pensions, healthcare) and fall on both employers and employees.

Payroll Tax Incidence: Who Really Bears the Employer Share? Tax incidence—the economic burden of a tax—shows that splitting payroll tax between employer and employee is arbitrary. Whether the worker or firm ultimately bears the burden depends on labour market elasticity, not the legal split.

Pension Liability The long-term financial obligation of a government or employer to fund promised retirement benefits to employees, a major unfunded liability in many jurisdictions.

Performance-Based Budgeting Linking appropriations to measurable programme outcomes rather than inputs to improve public-sector accountability.

Pigouvian Tax A corrective tax set equal to the marginal external cost of an activity, designed to internalize negative externalities and align private incentives with social welfare.

Ponzi Finance (Sovereign) A fiscal condition where governments perpetually borrow to cover interest payments, never reducing principal, risking eventual rollover crisis.

Poverty Trap vs Welfare Cliff: What Is the Difference? Welfare cliffs are abrupt total benefit losses at income thresholds; poverty traps reflect sustained high implicit tax rates across a range.

Preemptive Debt Restructuring How governments restructure debt before formal default, negotiate with creditors, and why early action typically produces better outcomes than distressed restructurings.

Preferred Creditor Status The convention that multilateral lenders like the IMF and World Bank are repaid before private creditors in sovereign debt restructuring.