Q Ontax

I would like to know if I am considered a tax payer in my circumstance please. I earn marginally above the personal tax free allowance threshold which means I would be liable for 20% Tax. I pay in to a company pension which is net pay deduction rather than relief at source or salary sacrifice. Would this deduction be considered as sending me back under the threshold meaning I am not tax payer. Or because it is net pay is it not considered as a gross deduction? The reason I ask is that I also put additional pension contributions in to another pension account which is relief at source. I am aware that non tax payers get relief on £2,880. I am trying to understand if I am considered as being a tax payer or a non tax payer so that I can work out of I am able to claim pension tax relief above £2,880. Thank you.