Input Credit
Input credit means at the time of paying tax on output, you can reduce the tax you have already paid on inputs. Say, you are a manufacturer – tax payable on output (FINAL PRODUCT) is Rs 450 tax paid on input (PURCHASES) is Rs 300 You can claim INPUT CREDIT of Rs 300 and you only need to deposit Rs 150 in taxes.
Input Credit in GST
Input Credit Mechanism is available to you when you are covered under the GST Act.
Which means if you are a manufacturer, supplier, agent, e-commerce operator, aggregator or any of the persons mentioned here, registered under GST, You are eligible to claim INPUT CREDIT for tax paid by you on your PURCHASES.