Reading 14
MODULE 14.1: FISCAL POLICY OBJECTIVES
Compare monetary and fiscal policy.
Fiscal policy refers to a government's use of spending and taxation to influence economic activity. The budget is said to be balanced when tax revenues equal government expenditures. A budget surplus occurs when government tax revenues exceed expenditures, and a budget deficit occurs when government expenditures exceed tax revenues. An increase in the deficit (or a decrease in a surplus) is considered expansionary in that it tends to increase GDP. A decrease in a deficit (or increase in a surplus) is considered contractionary in that it tends to decrease GDP.
Monetary policy refers to the central bank's actions that affect the quantity of money and credit in an economy to influence economic activity. Monetary policy is said to be expansionary (or accommodative or easy) when the central bank increases the quantity of money and credit in an economy. Conversely, when the central bank is reducing the quantity of money and credit in an economy, monetary policy is said to be contractionary (or restrictive or tight).
Policymakers use both monetary and fiscal policies with the goals of maintaining stable prices and producing positive economic growth. Fiscal policy can also be used as a tool for redistribution of income and wealth.
財政政策(Fiscal policy)指政府透過政府支出與課稅來影響經濟活動。當稅收等於政府支出時,稱為預算平衡(balanced budget)。當政府稅收超過支出時,出現財政盈餘(budget surplus);當支出超過稅收時,出現財政赤字(budget deficit)。赤字增加(或盈餘減少)被視為擴張性,因為傾向提升 GDP;赤字減少(或盈餘增加)被視為緊縮性,傾向壓低 GDP。
貨幣政策(Monetary policy)指中央銀行影響經濟中貨幣與信用數量的行動,用以影響經濟活動。當中央銀行增加貨幣與信用數量時,貨幣政策稱為擴張性(寬鬆性/accommodative/easy);反之當中央銀行縮減貨幣與信用時,稱為緊縮性(restrictive/tight)。
決策者同時運用貨幣政策與財政政策,目標是維持物價穩定並促進正向經濟成長。財政政策也可作為重分配所得與財富的工具。
Describe roles and objectives of fiscal policy as well as arguments as to whether the size of a national debt relative to GDP matters.
Objectives of fiscal policy may include the following:
- Influencing the level of economic activity and aggregate demand
- Redistributing wealth and income among segments of the population
- Allocating resources among economic agents and sectors in the economy
In general, decreased taxes and increased government spending both increase a budget deficit, overall demand, economic growth, and employment; increased taxes and decreased government spending decrease these. Budget deficits are increased in response to recessions, and budget deficits are decreased to slow growth when inflation is too high.
Keynesian economists believe that fiscal policy, through its effect on aggregate demand, can have a strong effect on economic growth when the economy is operating at less than full employment. Monetarists believe that the effect of fiscal stimulus is only temporary, and that monetary policy should be used to increase or decrease inflationary pressures over time. Monetarists do not believe that monetary policy should be used in an attempt to influence aggregate demand to counter cyclical movements in the economy.
Discretionary fiscal policy refers to the spending and taxing decisions of a national government that are intended to stabilize the economy. In contrast, automatic stabilizers are built-in fiscal devices triggered by the state of the economy. For example, during a recession, tax receipts will fall, and government expenditures on unemployment insurance payments will increase. Both of these tend to increase budget deficits and are expansionary. Similarly, during boom times, higher tax revenues coupled with lower outflows for social programs tend to decrease budget deficits and are contractionary.
When a government runs fiscal deficits, it incurs debt that needs to be repaid as well as ongoing interest expense. Total deficits, annual deficits, and interest expense can all be evaluated relative to annual GDP. When these ratios increase beyond certain levels, it may be a cause for concern, and the solvency of the country may be questioned.
A country's debt ratio is the ratio of aggregate debt to GDP. Because taxes are linked to GDP, when an economy grows in real terms, so will tax revenues. If the real interest rate on the government's debt is higher than the real growth rate of the economy, then the debt ratio will increase over time (keeping tax rates constant). Similarly, if the real interest rate on the government's debt is lower than real growth in GDP, the debt ratio will decrease (i.e., improve) over time.
財政政策的目標可能包括:
- 影響經濟活動水準與總合需求
- 在人口各族群之間重分配財富與所得
- 在經濟體各部門與主體之間分配資源
一般而言,減稅與增加政府支出都會同時擴大財政赤字、提升整體需求、促進經濟成長與就業;增稅與削減支出則會產生反向效果。在衰退時期財政赤字會擴大,當通膨過高需要降溫時則縮小赤字。
凱因斯學派(Keynesian)認為財政政策透過對總合需求的影響,在經濟未達充分就業時能對成長產生強力效果。貨幣主義者(Monetarists)認為財政刺激的效果只是暫時的,長期應靠貨幣政策調節通膨壓力;貨幣主義者不認為貨幣政策應該用來影響總合需求以對抗景氣循環。
裁量性財政政策(Discretionary fiscal policy)是指政府刻意調整支出與課稅以穩定經濟。相對地,自動穩定機制(automatic stabilizers)是內建在財政體制中、由經濟狀況自動觸發的工具。例如衰退期間稅收自然下降、失業保險支出上升,兩者都會擴大赤字並具有擴張效果;繁榮時則相反,赤字縮小具有緊縮效果。
政府舉借財政赤字會累積需要償還的政府債務,以及持續的利息支出。赤字總額、年度赤字、利息費用都可以相對 GDP 進行評估。當這些比率超過某些水準,可能引發疑慮,甚至令市場質疑該國的償債能力。
一國的債務比率(debt ratio)是累積債務相對 GDP 的比例。由於稅收與 GDP 連動,當實質經濟成長時稅收也會增加。若政府債務的實質利率高於經濟實質成長率,債務比率會隨時間上升(假設稅率不變);若實質利率低於 GDP 實質成長,債務比率則會改善下降。
Arguments for being concerned with the size of a fiscal deficit are as follows:
- Higher deficits lead to higher future taxes. Higher future taxes will lead to disincentives to work and entrepreneurship. This leads to lower long-term economic growth.
- If markets lose confidence in the government, investors may not be willing to refinance the debt. This can lead to the government defaulting (if debt is in a foreign currency) or having to simply print money (if the debt is in local currency). Printing money would ultimately lead to higher inflation.
- Increased government borrowing will tend to increase interest rates, and firms may reduce their borrowing and investment spending as a result, thus decreasing the impact on aggregate demand of deficit spending. This is referred to as the crowding-out effect because government borrowing is taking the place of private-sector borrowing.
Arguments against being concerned with the size of a fiscal deficit are as follows:
- If the debt is primarily held by domestic citizens, the scale of the problem is overstated.
- If the debt is used to finance productive capital investment, future economic gains will be sufficient to repay the debt.
- Fiscal deficits may prompt needed tax reform.
- Deficits would not matter if Ricardian equivalence holds, which means private-sector savings in anticipation of future tax liabilities just offset the government deficit.
- If the economy is operating at less than full capacity, deficits do not divert capital away from productive uses and can aid in increasing GDP and employment.
支持「財政赤字規模是一大隱憂」的論點:
- 更高的赤字導致未來稅負更重,高稅率削弱工作與創業誘因,從而壓低長期經濟成長。
- 若市場對政府失去信心,投資人可能不願再為債務融資。若政府債務以外幣計價,可能造成違約;若以本幣計價,政府可能被迫印鈔,最終引發更高通膨。
- 政府借貸增加傾向推高利率,企業可能因此減少借貸與投資,削弱赤字支出對總合需求的效果。這稱為排擠效應(crowding-out effect)——政府借貸擠占了原本屬於私部門的資金。
反對「財政赤字規模構成重大隱憂」的論點:
- 若債務主要由本國公民持有,問題的嚴重程度被誇大了。
- 若債務用於生產性資本投資,未來的經濟獲益足以償還。
- 財政赤字可能催生急需的稅制改革。
- 若李嘉圖等價(Ricardian equivalence)成立,則赤字無關緊要——民間部門為因應未來更高的稅負而增加儲蓄,剛好抵消政府赤字,對總合需求沒有淨效果。
- 若經濟運行低於全產能,赤字不會把資本從生產性用途排擠出去,還有助於提升 GDP 與就業。
- A. balance the budget.
- B. achieve economic targets.
- C. redistribute income and wealth.
- A. controlling the money supply to limit inflation.
- B. adjusting tax rates to influence aggregate demand.
- C. using government spending to control interest rates.
MODULE 14.2: FISCAL POLICY TOOLS AND IMPLEMENTATION
Describe tools of fiscal policy, including their advantages and disadvantages.
Fiscal policy tools include spending tools and revenue tools.
Spending Tools
Transfer payments, also known as entitlement programs, redistribute wealth, taxing some and making payments to others. Examples include government-run retirement income plans (such as Social Security in the United States) and unemployment insurance benefits. Transfer payments are not included in GDP computations.
Current spending refers to government purchases of goods and services on an ongoing and routine basis.
Capital spending refers to government spending on infrastructure, such as roads, schools, bridges, and hospitals. Capital spending is expected to boost future productivity of the economy.
Spending tools are commonly justified as means of pursuing the following goals:
- Provide services such as national defense that benefit all the residents in a country.
- Invest in infrastructure to enhance economic growth.
- Support the country's growth and unemployment targets by directly affecting aggregate demand.
- Provide a minimum standard of living.
- Subsidize investment in research and development for certain high-risk ventures consistent with future economic growth or other goals (e.g., green technology).
Revenue Tools
Direct taxes are levied on income or wealth. These include income taxes, taxes on income for national insurance, wealth taxes, estate taxes, corporate taxes, capital gains taxes, and Social Security taxes. Some progressive taxes (such as income taxes and wealth taxes) collect revenue for wealth and income redistribution.
Indirect taxes are levied on goods and services. These include sales taxes, value-added taxes (VATs), and excise taxes. Indirect taxes can be used to reduce consumption of some goods and services (e.g., alcohol, tobacco, gambling).
Desirable attributes of tax policy are as follows:
- Simplicity to use and enforce
- Efficiency, defined here as minimizing interference with market forces and not acting as a deterrent to working
- Fairness — two of the commonly held beliefs are horizontal equality (people in similar situations should pay similar taxes) and vertical equality (richer people should pay more in taxes)
- Sufficiency, in that taxes should generate enough revenues to meet the spending needs of the government
Advantages of fiscal policy tools include:
- Social policies (e.g., discouraging tobacco use) can be implemented quickly via indirect taxes.
- Quick implementation of indirect taxes also means that government revenues can be increased without significant additional costs.
Disadvantages of fiscal policy tools include:
- Direct taxes and transfer payments take time to implement, delaying the impact of fiscal policy.
- Capital spending also takes a long time to implement; the economy may have recovered by the time its impact is felt.
Announcing a change in fiscal policy may have significant effects on expectations. For example, an announcement of a future increase in taxes may immediately reduce current consumption, rapidly producing the desired goal of reducing aggregate demand.
Not all fiscal policy tools affect economic activity equally. Spending tools are most effective in increasing aggregate demand. Tax reductions are somewhat less effective, as people may not spend the entire amount of the tax savings. Tax reductions for those with low incomes will be more effective in increasing aggregate demand, as those with lower incomes tend to spend a larger proportion of income on consumption; that is, they save a smaller proportion of income and have a higher marginal propensity to consume (MPC).
財政政策工具分為支出工具與稅收工具兩大類。
支出工具(Spending Tools)
移轉支付(Transfer payments)又稱為福利計畫,透過向部分人課稅後再給予另一批人補貼,達到財富重分配效果。例子包括政府主辦的退休所得計畫(如美國的社會安全制度)及失業保險給付。移轉支付不計入 GDP。
經常性支出(Current spending)指政府定期、例行性採購財貨與服務的支出。
資本支出(Capital spending)指政府投資於基礎設施,如道路、學校、橋梁與醫院。資本支出預期將提升未來經濟生產力。
支出工具通常以下列理由加以正當化:提供全體居民受益的服務(如國防)、投資基礎建設促進成長、直接拉動總合需求以達成就業目標、提供最低生活保障、補貼高風險的研發投資(如綠能科技)。
稅收工具(Revenue Tools)
直接稅(Direct taxes)針對所得或財富課徵,包括所得稅、社會保險稅、財富稅、遺產稅、公司稅、資本利得稅等。累進稅制(如所得稅與財富稅)兼具重分配功能。
間接稅(Indirect taxes)針對財貨與服務課徵,包括銷售稅、加值稅(VAT)與貨物稅。間接稅可用於減少特定財貨的消費(如酒精、菸草、賭博)。
良好稅制的屬性:簡便易執行;有效率(最小化對市場的干預,不打擊工作誘因);公平(水平公平:情況相似的人繳相似的稅;垂直公平:較富裕者繳較多稅);充足(稅收應足以支應政府支出需求)。
財政政策工具的優點:間接稅可快速實施社會政策(如抑制菸品使用);快速實施間接稅也意味著政府可在幾乎不增加額外成本下提高收入。
財政政策工具的缺點:直接稅與移轉支付需要時間才能落實,延遲財政政策效果;資本支出實施期更長,等到效果顯現時,經濟可能已自行回復。
宣布財政政策改變本身也可能對預期產生重大影響。例如,宣布未來將提高稅率可能立即減少當前消費,迅速達到降低總合需求的目標。
不同財政政策工具對經濟活動的影響程度不同。政府支出工具對提升總合需求最有效。減稅效果稍差,因為民眾不一定把所有減稅金額拿去消費。針對低所得者的減稅更能有效拉動總合需求,因為低所得者的消費比例更高——即儲蓄比例較低,邊際消費傾向(MPC)較高。
Fiscal Multiplier
Changes in government spending have magnified effects on aggregate demand because those whose incomes increase from increased government spending will, in turn, increase their spending, which increases the incomes and spending of others. The magnitude of the multiplier effect depends on the tax rate and on the marginal propensity to consume.
To understand the calculation of the multiplier effect, consider an increase in government spending of $100 when the MPC is 80% and the tax rate is 25%. The increase in spending increases incomes by $100, but $25 ($100 × 0.25) of that will be paid in taxes. Disposable income is equal to income after taxes, so disposable income increases by $100 × (1 − 0.25) = $75. With an MPC of 80%, additional spending by those who receive the original $100 increase is $75 × 0.8 = $60.
This additional spending will increase others' incomes by $60 and disposable incomes by $60 × 0.75 = $45, from which they will spend $45 × 0.8 = $36.
Because each iteration of this process reduces the amount of additional spending, the effect reaches a limit. The fiscal multiplier determines the potential increase in aggregate demand resulting from an increase in government spending:
\[\text{fiscal multiplier} = \dfrac{1}{1 - \text{MPC}(1 - t)}\]
Here, with a tax rate of 25% and an MPC of 80%, the fiscal multiplier is \(1 / [1 - 0.8(1 - 0.25)] = 2.5\), and the increase of $100 in government spending has the potential to increase aggregate demand by $250.
The fiscal multiplier is inversely related to the tax rate (higher tax rate decreases the multiplier) and is directly related to the marginal propensity to consume (higher MPC increases the multiplier).
政府支出的改變對總合需求有放大效果,因為因政府支出增加而獲得收入的人,又會提高自身的消費,進而提升他人的收入與消費。這個乘數效應(multiplier effect)的大小取決於稅率與邊際消費傾向(MPC)。
以具體例子說明:假設政府支出增加 $100,MPC = 80%,稅率 = 25%。收入增加 $100,其中 $25(= $100 × 0.25)繳稅。可支配所得(Disposable income)= 稅後所得,增加 $100 × (1 − 0.25) = $75。以 MPC = 80% 計算,收到這 $100 的人額外消費 $75 × 0.8 = $60。
這 $60 的消費使他人收入增加 $60,可支配所得增加 $60 × 0.75 = $45,他們再消費 $45 × 0.8 = $36。如此循環,每一輪增量遞減,最終收斂到某一極限。
財政乘數(fiscal multiplier)決定政府支出增加所能帶動的總合需求潛在增量:
財政乘數 = 1 / [1 − MPC(1 − t)]
以上例(稅率 25%,MPC 80%)計算:財政乘數 = 1 / [1 − 0.8(1 − 0.25)] = 2.5,故 $100 政府支出增加最多可帶動 $250 的總合需求增加。
財政乘數與稅率反向(稅率愈高,乘數愈小);與 MPC 正向(MPC 愈高,乘數愈大)。
Balanced Budget Multiplier
To balance the budget, the government could increase taxes by $100 to just offset a $100 increase in spending. Changes in taxes also have a magnified effect on aggregate demand. An increase in taxes will decrease disposable income and consumption expenditures, thereby decreasing aggregate demand. The initial decrease in spending from a tax increase of $100 is $100 × MPC = 100 × 0.8 = $80; beyond that, the multiplier effect is the same as we described for a direct increase in government spending, and the overall decrease in aggregate demand for a $100 tax increase is $100(MPC) × fiscal multiplier — or, for our example, $100(0.8)(2.5) = $200.
Combining the total increase in aggregate demand from a $100 increase in government spending with the total decrease in aggregate demand from a $100 tax increase shows that the net effect on aggregate demand of both is an increase of $250 − $200 = $50, so we can say that the balanced budget multiplier is positive.
If, instead of a $100 increase in taxes, we increased taxes by $100 / MPC = 100 / 0.8 = $125 and increased government spending by $100, the net effect on aggregate demand would be zero.
為了平衡預算,政府可以在增加 $100 支出的同時也增加 $100 稅收。課稅的改變同樣對總合需求有放大效果。增稅會降低可支配所得與消費支出,從而降低總合需求。增稅 $100 帶來的初始消費減少為 $100 × MPC = $100 × 0.8 = $80;後續乘數效應與直接增加政府支出相同,因此增稅 $100 所帶來的總合需求減少總量為 $100(MPC) × 財政乘數 = $100(0.8)(2.5) = $200。
將政府支出增加 $100 帶來的需求增量 $250,加上增稅 $100 帶來的需求減量 $200,淨效果為需求增加 $250 − $200 = $50,因此可說平衡預算乘數(balanced budget multiplier)為正值。
若改為將稅收增加 $100 / MPC = $100 / 0.8 = $125(而非 $100),同時增加政府支出 $100,則對總合需求的淨效果為零。
Ricardian Equivalence
Increases in the current deficit mean greater taxes in the future. To maintain their preferred pattern of consumption over time, taxpayers may increase current savings (reduce current consumption) to offset the expected cost of higher future taxes. If taxpayers reduce current consumption and increase current saving by just enough to repay the principal and interest on the debt the government issued to fund the increased deficit, there is no effect on aggregate demand. This is known as Ricardian equivalence, after economist David Ricardo. If taxpayers underestimate their future liability for servicing and repaying the debt so that aggregate demand is increased by equal spending and tax increases, Ricardian equivalence does not hold. Whether it does is an open question.
當前赤字的增加意味著未來將有更高的稅收。為了維持跨期一致的消費偏好,納稅人可能增加當前儲蓄(減少當前消費)以因應未來更高的稅負。若納稅人剛好增加足夠儲蓄來償還政府因赤字而發行的債務本息,則對總合需求沒有任何淨影響。這一現象以經濟學家大衛·李嘉圖(David Ricardo)命名,稱為李嘉圖等價(Ricardian equivalence)。若納稅人低估了未來的償債負擔,則支出與增稅等額調整將使總合需求上升,此時李嘉圖等價不成立。這個問題至今仍無定論。
Explain the implementation of fiscal policy and difficulties of implementation as well as whether a fiscal policy is expansionary or contractionary.
Fiscal policy is implemented through changes in taxes and spending. This is called discretionary fiscal policy (as opposed to automatic stabilizers, discussed previously). Discretionary fiscal policy would be designed to be expansionary when the economy is operating below full employment. Fiscal policy aims to stabilize aggregate demand. During recessions, actions can be taken to increase government spending or decrease taxes. Either change tends to strengthen the economy by increasing aggregate demand, putting more money in the hands of corporations and consumers to invest and spend. During inflationary economic booms, actions can be taken to decrease government spending or increase taxes. Either change tends to slow the economy by decreasing aggregate demand, taking money out of the hands of corporations and consumers and causing both investment and consumption spending to decrease.
Discretionary fiscal policy is not an exact science. First, economic forecasts might be wrong, leading to incorrect policy decisions. Second, complications arise in practice that delay both the implementation of discretionary fiscal policy and the impact of policy changes on the economy. The lag between recessionary or inflationary conditions in the economy and the impact on the economy of fiscal policy changes can be divided into three types:
- Recognition lag. Discretionary fiscal policy decisions are made by a political process. The state of the economy is complex, and it may take policymakers time to recognize the nature and extent of the economic problems.
- Action lag. Governments take time to discuss, vote on, and enact fiscal policy changes.
- Impact lag. Time elapses between the enactment of fiscal policy changes and when the impact of the changes on the economy actually takes place. It takes time for corporations and individuals to act on the fiscal policy changes, and fiscal multiplier effects occur only over time as well.
These lags can actually make fiscal policy counterproductive. For example, if the economy is in a recession phase, fiscal stimulus may be deemed appropriate. However, by the time fiscal stimulus is implemented and has its full impact, the economy may already be on a path to a recovery driven by the private sector.
財政政策透過改變稅收與政府支出來實施,這稱為裁量性財政政策(discretionary fiscal policy)(相對於前述自動穩定機制)。當經濟運行低於充分就業時,裁量性財政政策應設計為擴張性的。財政政策的目標是穩定總合需求。衰退時可增加政府支出或減稅,兩者都能提升總合需求,讓企業與消費者手中有更多資金投資與消費;通膨繁榮期間則可削減政府支出或增稅,兩者都能降低總合需求,使投資與消費減少。
裁量性財政政策並非精確的科學。首先,經濟預測可能出錯,導致錯誤的政策決定。其次,實務中存在複雜性,拖延了財政政策的實施及其對經濟的影響。從衰退或通膨狀況出現,到財政政策改變產生經濟效果,中間的時間差可分三類:
- 認知落遲(Recognition lag):裁量性財政政策須經政治程序決定。經濟狀況複雜,決策者可能需要時間才能辨識問題的性質與嚴重程度。
- 行動落遲(Action lag):政府需要時間討論、投票、立法通過財政政策改變。
- 影響落遲(Impact lag):財政政策法令頒布後,要實際影響到經濟還需要時間。企業與個人需要時間才能因應政策改變採取行動,乘數效應也是隨時間逐步發生。
這些落遲可能使財政政策弄巧成拙。例如,若經濟處於衰退階段,財政刺激被視為適當措施;然而等到刺激計畫實施並產生完整效果時,私部門驅動的復甦可能已然開始。
Additional macroeconomic issues may hinder the usefulness of fiscal policy:
- Misreading economic statistics. The full employment level for an economy is not precisely measurable. If the government relies on expansionary fiscal policy mistakenly at a time when the economy is already at full capacity, it will simply drive inflation higher.
- Crowding-out effect. Expansionary fiscal policy may crowd out private investment. Greater government borrowing tends to increase interest rates, which decreases private investments (some investments will be uneconomic with higher borrowing costs). This crowding-out effect can reduce the impact of expansionary fiscal policy on aggregate demand. Opinions vary on the magnitude of this effect.
- Supply shortages. If economic activity is slow due to resource constraints (low availability of labor or other resources) and not due to low demand, expansionary fiscal policy will fail to achieve its objective and will probably lead to higher inflation.
- Limits to deficits. There is a limit to expansionary fiscal policy. If the markets perceive that the deficit is already too high as a proportion of GDP, funding the deficit will be problematic. This could lead to higher interest rates and actually make the situation worse.
- Multiple targets. If the economy has high unemployment coupled with high inflation, fiscal policy cannot address both problems simultaneously.
To determine if fiscal policy is expansionary or contractionary, economists often focus on changes in the budget surplus or deficit. An increase (decrease) in surplus is indicative of a contractionary (expansionary) fiscal policy. Similarly, an increase (decrease) in deficit is indicative of an expansionary (contractionary) fiscal policy.
For the exam, an increase (decrease) in a revenue item (e.g., sales tax) should be considered contractionary (expansionary), and an increase (decrease) in a spending item (e.g., construction of highways) should be considered expansionary (contractionary).
A government's intended fiscal policy is not necessarily obvious from just examining the current deficit. Consider an economy that is in recession so that transfer payments are increased and tax revenue is decreased, leading to a deficit. This does not necessarily indicate that fiscal policy is expansionary as, at least to some extent, the deficit is a natural outcome of the recession without any explicit action of the government. Economists often use a measure called the structural budget deficit (or cyclically adjusted budget deficit) to gauge fiscal policy. This is the deficit that would occur based on current policies if the economy were at full employment.
其他可能阻礙財政政策效用的總體經濟問題:
- 誤讀經濟統計數據:充分就業水準無法精確衡量。若政府在經濟已達全產能時誤用擴張性財政政策,只會推升通膨。
- 排擠效應(Crowding-out effect):擴張性財政政策可能排擠私人投資。政府借貸增加傾向推高利率,使私人投資減少(部分投資在較高借貸成本下變得不經濟)。排擠效應可能削弱擴張性財政政策對總合需求的效果,但其幅度大小各方看法不一。
- 供給短缺:若經濟活動遲緩是因為資源限制(勞動力或其他資源不足),而非需求不足,擴張性財政政策將無法達到目標,反而可能引發更高通膨。
- 赤字上限:擴張性財政政策有其極限。若市場認為赤字佔 GDP 的比例已過高,融資將成問題,這反而可能導致利率上升,使情況更糟。
- 多重目標衝突:若經濟同時面臨高失業與高通膨,財政政策無法同時解決兩個問題。
要判斷財政政策是擴張性還是緊縮性,經濟學家通常聚焦於盈餘或赤字的變化。盈餘增加(減少)表示緊縮性(擴張性)財政政策;赤字增加(減少)表示擴張性(緊縮性)財政政策。
教授提醒:考試時,稅收項目增加(減少)視為緊縮性(擴張性);支出項目增加(減少)視為擴張性(緊縮性)。
光看當前赤字未必能看清政府的財政政策意圖。例如,若經濟處於衰退,移轉支付增加、稅收減少,出現赤字,這未必意味著財政政策是擴張性的——赤字至少部分是衰退本身帶來的自然結果,而非政府主動施政的結果。因此,經濟學家常用結構性預算赤字(structural budget deficit,又稱週期調整預算赤字)來衡量財政政策立場——即在現行政策下,若經濟位於充分就業水準時將出現的赤字。
- A. Lower growth, because the tax increase will have a greater effect.
- B. No effect, because the tax and spending effects just offset each other.
- C. Higher growth, because the spending increase will have a greater effect.
- A. –$66 million.
- B. –$114 million.
- C. –$250 million.
- A. Ricardian equivalence holds.
- B. a crowding-out effect occurs.
- C. debt is used to finance capital growth.
- A. action lag.
- B. impact lag.
- C. recognition lag.
- A. and government spending both decrease.
- B. decrease and government spending increases.
- C. increase and government spending decreases.
Fiscal policy is a government's use of taxation and spending to influence the economy. Monetary policy deals with determining the quantity of money supplied by the central bank. Both policies aim to achieve economic growth with price level stability, although governments use fiscal policy for social and political reasons as well.
Objectives of fiscal policy can include (1) influencing the level of economic activity, (2) redistributing wealth or income, and (3) allocating resources among industries.
Arguments for being concerned with the size of a fiscal deficit:
- Higher future taxes lead to disincentives to work, negatively affecting long-term economic growth.
- Fiscal deficits may not be financed by the market when debt levels are high.
- There is a crowding-out effect as government borrowing increases interest rates and decreases private-sector investment.
Arguments against being concerned with the size of a fiscal deficit:
- Debt may be financed by domestic citizens.
- Deficits for capital spending can boost the productive capacity of the economy.
- Fiscal deficits may prompt needed tax reform.
- Ricardian equivalence may prevail: private savings rise in anticipation of the need to repay principal on government debt.
- When the economy is operating below full employment, deficits do not crowd out private investment.
Fiscal policy tools include spending tools and revenue tools. Spending tools include transfer payments, current spending (goods and services used by government), and capital spending (investment projects funded by government). Revenue tools include direct and indirect taxation.
An advantage of fiscal policy is that indirect taxes can be used to quickly implement social policies and can also be used to quickly raise revenues at a low cost.
Disadvantages of fiscal policy include time lags for implementing changes in direct taxes and time lags for capital spending changes to have an impact.
Fiscal policy is implemented by government changes in taxing and spending policies. Delays in realizing the effects of fiscal policy changes limit their usefulness. Delays can be caused by the following:
- Recognition lag. Policymakers may not immediately recognize when fiscal policy changes are needed.
- Action lag. Governments take time to enact needed fiscal policy changes.
- Impact lag. Fiscal policy changes take time to affect economic activity.
In general, fiscal policies that increase the government deficit are often considered expansionary, and policies that decrease the deficit are considered contractionary. However, because a deficit will naturally increase during a recession and decrease during an expansion, the impact of a current deficit is often judged relative to a structural (cyclically adjusted) deficit amount.
LOS 14.a
財政政策是政府透過課稅與政府支出影響經濟的工具。貨幣政策處理中央銀行決定貨幣供應量的問題。兩種政策均以物價穩定下的經濟成長為目標,但政府也因社會與政治原因運用財政政策。
LOS 14.b
財政政策目標包括:(1) 影響經濟活動水準;(2) 重分配財富或所得;(3) 在各產業間分配資源。
支持擔憂財政赤字規模的論點:高未來稅負打擊工作誘因、高債務水準可能難以融資、排擠效應使政府借貸推高利率並壓縮私人投資。
反對擔憂財政赤字規模的論點:債務可由本國公民持有、資本支出赤字可提升生產力、財政赤字可促進稅制改革、李嘉圖等價可能成立(民間儲蓄預防性上升)、低於充分就業時赤字不造成排擠。
LOS 14.c
財政政策工具分為支出工具(移轉支付、經常性支出、資本支出)與稅收工具(直接稅、間接稅)。優點:間接稅可快速實施社會政策並以低成本增加稅收。缺點:直接稅與資本支出改變的效果均有時間落遲。
LOS 14.d
財政政策透過政府改變課稅與支出政策實施。落遲限制了其效用:認知落遲(決策者未能及時察覺問題)、行動落遲(立法需要時間)、影響落遲(政策效果需時間傳導至經濟)。一般而言,擴大赤字的政策為擴張性、縮小赤字為緊縮性;但實際評估須對照結構性(週期調整)赤字。
ANSWER KEY FOR MODULE QUIZZES
Module Quiz 14.1
1. B — Both monetary and fiscal policies primarily strive to achieve economic targets such as inflation and GDP growth. Balancing the budget is not a goal for monetary policy and is a potential outcome of fiscal policy. Fiscal policy (but not monetary policy) may secondarily be used as a tool to redistribute income and wealth. (LOS 14.a)
2. B — Influencing the level of aggregate demand through taxation and government spending is an objective of fiscal policy. Controlling inflation and interest rates are typical objectives of monetary policy. (LOS 14.b)
Module Quiz 14.2
1. C — The amount of the spending program exactly offsets the amount of the tax increase, leaving the budget unaffected. The multiplier for government spending is greater than the multiplier for a tax increase. Therefore, the balanced budget multiplier is positive. All of the government spending enters the economy as increased expenditure, whereas spending is reduced by only a portion of the tax increase. (LOS 14.c)
2. B — fiscal multiplier = \(1 / [1 - \text{MPC}(1 - T)] = 1 / [1 - 0.80(1 - 0.3)] = 2.27\); change in government spending = −$50 million; change in aggregate demand = −(50 × 2.27) = −$113.64 million. (LOS 14.c)
3. B — Crowding out refers to the possibility that government borrowing causes interest rates to increase and private investment to decrease. If government debt is financing the growth of productive capital, this should increase future economic growth and tax receipts to repay the debt. Ricardian equivalence is the theory that if government debt increases, private citizens will increase savings in anticipation of higher future taxes, and it is an argument against being concerned about the size of government debt and budget deficits. (LOS 14.d)
4. C — More frequent and current economic data would make it easier for authorities to monitor the economy and to recognize problems. The reduction in the time between economic reports should reduce the recognition lag. (LOS 14.d)
5. B — Increases in government spending and decreases in taxes are expansionary fiscal policy. Decreases in spending and increases in taxes are contractionary fiscal policy. (LOS 14.d)
模組測驗 14.1
1. B — 貨幣政策與財政政策都主要以達成經濟目標(如通膨、GDP 成長)為宗旨。預算平衡不是貨幣政策的目標,頂多是財政政策的副產品。財政政策(非貨幣政策)可兼具重分配所得與財富的次要功能。(LOS 14.a)
2. B — 透過課稅與政府支出影響總合需求的水準,是財政政策的目標。控制通膨與利率通常是貨幣政策的目標。(LOS 14.b)
模組測驗 14.2
1. C — 支出計畫的金額與增稅金額恰好相等,預算不受影響。但政府支出的乘數大於增稅的乘數,因此平衡預算乘數為正。政府支出全額進入經濟體成為增量支出,而增稅只有 MPC 的部分才會減少消費。(LOS 14.c)
2. B — 財政乘數 = 1 / [1 − 0.80(1 − 0.3)] = 2.27;政府支出變化 = −$50 百萬;總合需求變化 = −(50 × 2.27) = −$113.64 百萬。(LOS 14.c)
3. B — 排擠效應是指政府借貸推高利率、壓縮私人投資的可能性。若政府債務用於融資生產性資本成長,未來的經濟成長與稅收可足以償還。李嘉圖等價理論認為民眾將增加儲蓄以因應未來增稅,是一種反對擔憂政府債務的論點。(LOS 14.d)
4. C — 更頻繁且即時的經濟數據,有助於主管機關更容易監測經濟狀況並辨識問題。縮短數據發布間隔可降低認知落遲。(LOS 14.d)
5. B — 增加政府支出與降低稅率屬於擴張性財政政策;削減支出與提高稅率屬於緊縮性財政政策。(LOS 14.d)