 In September 2013, Bialik and Rauch renegotiated the contracts they held since they were introduced to the series in 2010.On their old contracts, each was making $20,000–$30,000 per episode, while the new contracts doubled that, beginning at $60,000 per episode, increasing steadily to $100,000 per episode by the end of the contract, as well as adding another year for both.By season seven, Galecki, Parsons, and Cuoco were also receiving 0.25 percent of the series' back-end money.