The impact opting out of the NHS Pension Scheme will have on your Added Years will depend on whether you re-join the Scheme at a later date and if so, how long after opting out you re-join the Scheme.
If you re-join within 12 months
If you opt out of the Scheme for less than 12 months then you can resume your Added Years contract when you re-join the Scheme.
You cannot pay arrears on the missing period but you can continue the contract from when you re-join the NHS Pension Scheme.
This would mean you would be buying less Added Years than quoted when the original contract was taken out. NHS Pensions would recalculate the lower amount of years that you will be purchasing as a result of this.
If you do not re-join the scheme within 12 months
If you do not re-join the Scheme within 12 months then you would not be able to resume the Added Years contract. As a consequence, this means that you will purchase less Added Years than the amount quoted on your original Added Years contract. NHS Pensions would recalculate the lower amount of years that you will be purchasing as a result of this.