Many employers who submit mainly nil returns (ie small owner managed businesses) for RTI are likely to get a letter from HMRC with Specified Charges on them, this is because under RTI if you don’t pay any employees in a pay period you need to submit a return to HMRC, if you forget or mis a period, which with HMRC RTI Basic PAYE Tools is easily done, HMRC will create a charge.
HMRC define a Specified Charge as
These are amounts we have estimated to be due when we have not received the necessary RTI PAYE submissions. We base these on you previous filing and payment history. We do this under Regulation 75A Income Tax (Pay As You Earn) Regulations 2003.
But as its an estimate is unlikely to be correct and on top of that HMRC will probably charge interest based on their Specified Charge.
If you get a Specified Charge check your RTI Submissions to makesure that you haven’t missed any, if you have missed one, post it now and then contact HMRC on Tel. 0300 200 3813.