Factors Causing Shift in Supply Curve

Rightward Shift

Leftward Shift

Change in price of Other goods 

Fall in price of other goods 

The rise in the price of other goods

Change in price of the factors of production

Fall in price of factors of production 

A rise in the price of factors of production 

Change in the goal of the firm

Sales or Revenue maximization goal of the firm

 Profit maximization goal of the firm 

Change in state of technology

 Improvement in technology

 Degradation or decline in technology

Change in producers expectation

Decrease in the tax rate for an increase in subsidies

Increase in tax rate or decrease in subsidies

Expected future price

Expectation of fall in future price

Expectation of rising in future price

Change in number of firms

Increase in number of firms

Decrease in number of firms

Change in natural factors

Natural factors, such as favorable rainfall.

Unfavorable natural factors, such as drought.