Pensions guidance on this site includes:

Subscriber guides:

• Pensions: tax rules & planning: The current and previous rules with detailed worked examples.
• Pension contributions: personal or company:  Is it more tax efficient to pay pension contributions personally or via your own company?
• Auto-enrolment: workplace pensions: Looks at the key features of auto-enrolment, who is affected, what employers need to do, and the relevant timescales.
• Pensions: tax charge for excess contributions: Calculating and paying the tax charge for individuals who exceed their annual pension contribution allowance.
• Employer pension contributions
• Pensions: unauthorised payment charges: The tax liabilities which can arise when a pension scheme makes (or is deemed to make) an unauthorised payment.

• ‘DIY’ Small Self-Administered Scheme (SSAS) A SSAS can be set up by an employer to provide benefits for members, usually on a defined contribution (money purchase) basis and run by solely by member trustees. You can create and run your own SSAS.

Freeview guides:

• What are relevant earnings for pensions purposes 
• Auto-enrolment: earnings thresholds