Taxation can have similar effects on individuals, businesses, and families. Here are some similarities:

1. Financial Impact: Taxation affects individuals, businesses, and families by reducing their disposable income or profits. Taxes are typically levied on income, property, goods and services, and other sources of revenue. The amount of tax paid can directly impact the financial resources available to individuals, businesses, and families.

2. Compliance Obligations: Individuals, businesses, and families are required to comply with tax laws and regulations. This includes filing tax returns, maintaining proper records, and fulfilling reporting requirements. Non-compliance can result in penalties and legal consequences.

3. Tax Planning: Individuals, businesses, and families may engage in tax planning strategies to minimize their tax liabilities. This can involve taking advantage of tax deductions, credits, exemptions, and other incentives provided by the tax system.

As for the two key sources of revenue for local governments, it can vary depending on the specific locality. However, two common taxes that often contribute to local government revenue are:

1. Property Tax: Property tax is levied on the value of real estate properties, including land and buildings. Local governments rely on property tax revenue to fund public services and infrastructure development within their jurisdiction.

2. Sales Tax: Sales tax is imposed on the sale of goods and services. Local governments may collect a portion of the sales tax revenue generated within their jurisdiction. This tax is often used to fund local projects, public safety, and community services.