Enter the amount of Québec income tax withheld at source and shown in box E of your RL-1 slip, box J of your RL-2 slip, box G of your RL-6 slip, box 16 of your RL-15 slip, or box I of your RL-25 slip. Income tax withheld from Employment Insurance benefits is shown on your T4E slip, and the income tax withheld from the Old Age Security pension is shown on your T4A (OAS) slip.