政府政策
爱德思国际普通中等教育证书经济学· 2.1.2· 25 分钟阅读
1. 1. 财政政策★★☆☆☆⏱ 6 min
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财政政策
一类宏观经济政策，通过调整政府收入（税收）和财政支出来影响总体经济活动，实现宏观经济目标。
政府收入来自两类核心税收：直接税（例如所得税、公司税，由个人或企业直接向政府缴纳）和间接税（例如增值税、燃油消费税，附加在商品价格上，消费者购买商品时间接缴纳）。政府支出主要投向核心公共服务，包括医疗、教育、国防、基础设施、福利补贴与公共交通。
财政赤字指某一年度政府支出超过税收收入的情况，而财政盈余则指税收收入超过财政支出的情况。财政赤字会增加国债规模，但可以在经济衰退期间刺激短期经济增长；财政盈余会降低国债规模，但可能在经济下行阶段放缓增长速度。
政府将所得税基础税率上调2%，同时削减公共交通基础设施支出。请分析该财政政策变动对降低通胀这一目标产生的影响。
- 1
所得税上调会降低家庭的可支配收入，因此消费支出减少，经济体的总需求水平下降。
- 2
政府基础设施支出的削减会进一步直接压低总需求。
- 3
总需求下降会缓解价格上行压力，有助于降低通胀率。
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该政策的次生影响是，总需求下降可能导致企业商品销量减少，进而裁员，推高失业率。
Exam tip:
解释财政政策的影响时，请务必将每一项变动直接对应到明确的宏观经济目标，这样才能在6分分析题中拿到全部分数。
2. 2. 货币政策★★☆☆☆⏱ 6 min
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货币政策
一类通常由独立中央银行管理的宏观经济政策，通过调整利率和其他措施（例如量化宽松）管控货币供给，影响经济活动。
利率是借贷的成本，同时也是储蓄的回报，以借贷或储蓄总金额的百分比形式表示。中央银行设定的基准利率会影响经济体系中的所有其他利率（包括抵押贷款利率、企业贷款利率、储蓄利率）。
利率的作用机制如下：利率上升会使借贷成本升高，同时储蓄的吸引力增强，因此消费者支出减少、企业投资缩减，总需求下降进而降低通胀水平（但可能会放缓经济增长、推高失业率）。利率下降则产生相反的效果，会刺激需求拉动经济增长、降低失业率（但可能会推高通胀）。
某中央银行将基准利率从3%下调至1.5%。请解释这一政策变动可能会对经济体中的中小型企业产生怎样的影响。
- 1
利率下调会降低企业的贷款成本，因此企业更有可能借贷资金用于投资新设备、扩张业务或雇佣新员工。
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利率下调还会减少家庭的每月抵押贷款还款额，增加可支配收入，因此消费者对企业所售商品和服务的需求会上升。
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对企业来说唯一的负面影响是，持有大量现金储备的企业从储蓄中获得的利息收入将会减少。
Exam tip:
考试中你不需要解释量化宽松的详细运作机制，只需记住它是当利率已无法进一步下调时，用于刺激需求的政策即可。
3. 3. 供给侧政策★★★☆☆⏱ 7 min
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供给侧政策
一套旨在通过提升劳动力、资本和市场的效率，提高经济体的生产能力（最大总产出水平）的政策。
供给侧政策通过提高生产率（每小时每名工人的产出）、降低生产壁垒发挥作用，可在不牺牲经济增长的前提下实现总产出提升、长期失业率下降、长期通胀水平降低。核心的供给侧政策措施列举如下：
Privatisation: selling state-owned assets to private firms to increase efficiency via competition
Deregulation: removing unnecessary rules that restrict business activity and new market entry
Education and training: improving workforce skills to increase productivity and reduce structural unemployment
Regional policies: targeted incentives for businesses to locate in areas with high unemployment
Infrastructure spending: building new roads, broadband and energy networks to reduce business costs
Lower business taxes: cutting corporation tax to encourage business investment
Lower income tax: increasing the financial reward for working to boost labour supply
某政府将针对失业青年的职业培训项目的年度支出提高20%。请评估这项供给侧政策在实现降低长期失业率这一目标方面的有效性。
- 1
职业培训为失业人群提供与岗位相关、匹配雇主需求的技能，减少因技能缺口导致的结构性失业。
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技能水平更高的劳动力也会提升该国对外国直接投资的吸引力，长期来看能创造更多新岗位。
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缺点：培训项目需要2-5年才能完全生效，并且如果培训内容不教授当地雇主迫切需要的技能，政策可能无法发挥作用。
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总体而言这是一项有效的长期政策，但应当搭配短期的需求侧政策，以更快地降低失业率。
Exam tip:
在评估供给侧政策时，请注意这类政策几乎都需要数年时间才能产生效果，与之不同的是财政政策和货币政策数月内就可以发挥作用。
4. 4. 政府管控措施★★★☆☆⏱ 6 min
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除了三类核心的宏观经济政策之外，政府还会使用直接管控手段来解决特定的市场失灵问题，实现经济和社会目标。你需要评估的四项关键管控措施概述如下：
Control Measure | Description | Advantages | Disadvantages |
|---|---|---|---|
Regulation | Rules restricting business activity (e.g. emissions limits, health and safety rules) | Easy to enforce, targeted at high-risk industries | Increases business costs, leading to higher consumer prices |
Fines | Financial penalties for breaking government rules | Deters rule-breaking, generates government revenue | Low fines have no deterrent effect, high enforcement costs |
Legislation | Laws making specific activities illegal (e.g. banning polluting fuels) | Strong legal deterrent, applies equally to all entities | Slow to amend, may lead to illegal black market activity |
Pollution permits | Tradable permits allowing fixed levels of emissions, bought/sold between firms | Incentivises firms to cut pollution to sell unused permits | High-polluting firms can buy permits and continue emitting, raising consumer prices |
某政府正考虑引入可交易污染许可制度，以减少制造业的碳排放。请评估与对超额排放处以固定罚款相比，这项政策的一项优势和一项劣势。
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优势：污染许可会为企业创造投资低碳技术的经济激励，因为企业可以将未使用的许可出售给其他企业获利，而罚款仅能对违规行为形成惩罚。
- 2
劣势：有能力购买额外许可的企业可以继续维持高污染水平，而如果设定的罚款高于减排成本，无论企业规模大小都会被迫削减排放。
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总体而言，许可制度在降低整个行业的总排放方面效率更高，但在减少最大污染企业的排放量方面，效果可能不如高额罚款。
Exam tip:
针对政府管控类的8分评估题，一定要同时权衡优势和劣势，最后给出清晰、有依据的结论，说明政策的有效性。
5. 常见陷阱
错误做法:
Mixing up fiscal and monetary policy, e.g. claiming the government sets interest rates
原因:
Interest rates are set by the independent central bank as part of monetary policy, not the government as part of fiscal policy
正确做法:
Always attribute fiscal policy changes to the government, and monetary policy changes to the central bank
错误做法:
Explaining supply-side policies as only affecting demand, e.g. saying lower income tax only increases consumer spending
原因:
Supply-side policies are designed to increase productive capacity first, even if they have secondary demand effects
正确做法:
For supply-side policy questions, first link changes to increased productivity or output capacity, then mention demand effects as secondary
错误做法:
Stating fiscal deficits are always bad, or fiscal surpluses are always good
原因:
Deficits boost growth during recessions, while surpluses can slow growth during downturns
正确做法:
Evaluate deficits/surpluses in the context of the current stage of the economic cycle
错误做法:
Classifying VAT as a direct tax
原因:
Direct taxes are paid directly to government on income/profit, while indirect taxes are added to the price of goods and paid on spending
正确做法:
Remember direct taxes = tax on income, indirect taxes = tax on spending
错误做法:
Claiming higher interest rates reduce inflation immediately
原因:
Interest rate changes take 18-24 months to have their full impact on the economy
正确做法:
Note time lags when explaining the impact of monetary policy changes
6. 速查表
Policy Type | Key Tools | Core Impact on Objectives |
|---|---|---|
Fiscal Policy | Direct taxes, indirect taxes, government spending | Changes total demand: higher spending/lower taxes boost growth/employment, may raise inflation; opposite for tight fiscal policy |
Monetary Policy | Interest rates, quantitative easing | Changes total demand: lower rates boost growth/employment, may raise inflation; opposite for tight monetary policy |
Supply-Side Policy | Privatisation, education/training, infrastructure, tax cuts | Increases long-run productive capacity: higher growth, lower unemployment, lower long-run inflation |
Government Controls | Regulation, fines, legislation, pollution permits | Target specific market failures (e.g. cut pollution), may increase business costs |
7. 常见问题
英国的货币政策由谁制定？
英国的货币政策由独立的英格兰银行制定，而非英国政府，英国政府仅负责财政政策的制定。
政策类考题中我需要绘制AD/AS图吗？
不需要，爱德思IGCSE经济学（4EC1）考纲不要求使用AD/AS图，即使你附上这类图示也不会获得额外分数。
深入阅读
下一步
Now that you have mastered the four types of government economic policy for Edexcel IGCSE Economics, you are ready to move on to analysing the trade-offs between macroeconomic objectives when implementing these policies, covered in the next subtopic (S3_T03). You should also practise linking policy changes to specific macroeconomic objectives (low inflation, low unemployment, high growth, balanced trade) using past paper data response questions from Paper 2, to get comfortable constructing logical analysis chains for 6 and 8 mark questions. Make sure you revise the macroeconomic objectives subtopic first if you are unsure of any objective definitions, as this is a common prerequisite for policy exam questions.