STEMO, is that a typo? I have had my paperwork and it is £146. . I thought that was the max. If it isn't maybe I need to query it.........
If you reached state pension age on or before 5/4/2016 then your state pension is based on the 'old rules' calculation which is the basic old state pension (£125.95 p/w in 2018/19) plus a SERPS/S2P amount which can be up to £160 p/w. So it is entirely possible to get £280+ p/w from the state pension, which is up to £14900 per annum. The person allowance for 2018/19 is £11850, which means that it
IS possible for someone who only gets the SP to be liable for some income tax on it ((14900-11850) * 20%) = £610 p/a
If you reach(ed) SPA after 5/4/2016 then your SP amount is based on the 'new rules', and the maximum SP is/will be £159 p/w, or £8270 p/a for 2018/19. So no-one who retires after 2016 will be liable for income tax on their SP.
Any 'company', 'private' or 'personal' pension income is then added onto your SP amount, and will push you into paying income tax once the total exceeds your personal allowance.
All the above relies on you having enough qualifying NI years (30 under the old system, 35 under the new system)