Taxation 22 Tax collection. Taxpayer compliance 19 tax system 18 Malaysia 17 Tax avoidance 15 pollution tax 15 environmental economics 11 Economics 8 Income tax 8 climate change 8 Revenue. Taxation. Internal revenue 7 Tax compliance 7 United States 7 tax 7 Tax accounting 6 Tax legislation 6 carbon emission 6 Accounting. Bookkeeping 5 China 5 Tax assessment 5 Tax evasion 5 Tax incentive 5 Tax incentives 5 Taxes 5 environmental policy 5 income distribution 5 Carbon 4 Carbon tax 4 Environmental protection 4 International trade 4