State Pension is taxable, but tax is not deducted at source. We will adjust your tax code at your main source of income to collect the tax due on this.
The DWP will notify us automatically within 7 days of your State Pension starting so your tax code can be reviewed.
Your private pension will have a separate tax code to your employment and this tax code will be dependant on your estimated annual income. You can see guidance here:
Income Tax rates and Personal Allowances
Thank you.