balanced budget multiplier
Technical term in macroeconomics: the effect on national income when government spending and taxes are increased by the same amount.
The balanced budget multiplier shows the effect on national income when government spending and taxes are increased by the same amount.
乗数効果 (multiplier effect) is a broader concept; 均衡予算乗数 specifically refers to the multiplier under a balanced budget scenario.
Compound of 均衡予算 (balanced budget) and 乗数 (multiplier), a calque from English 'balanced budget multiplier'.