National Insurance
Current LiabilitiesThis records National Insurance contributions (both employee and employer) due to HMRC. As a liability it normally carries a credit balance, cleared each time PAYE/NI is paid over to HMRC.
Real-world examples
Small employer with several staff
A small business with several employees on the payroll can usually claim Employment Allowance, which reduces the employer's Class 1 National Insurance bill for the year up to an annual cap set by HMRC. The employee NI deducted from staff still gets credited to 2211 in full each payroll run regardless, but the employer NI contribution added on top is reduced by the amount of allowance claimed that period.
Single-director company
A one-person limited company where the director is the sole employee is specifically excluded from claiming Employment Allowance under HMRC's rules, so the business pays employer NI in full on the director's salary from the first pound, with no relief. A director's payroll run generating £180 employee NI and £210 employer NI due is a credit of £390 to 2211 — the same mechanics as any other payroll, just without the allowance a similarly sized business with a second employee could claim.
Commonly confused with
Because code 2210 (P.A.Y.E.) sits right next to this one in Current Liabilities, it's a common mis-posting target. Code 2211 is specifically for national insurance, while 2210 covers p.a.y.e. — similar in nature, but keeping them separate is what makes the current liabilities section of your management accounts meaningful rather than a single lumped total.
What a mis-posting here costs you
An error posting to National Insurance misstates what the business owes, and for a Current Liabilities code specifically it can distort the working capital and current ratio that lenders and suppliers look at when assessing short-term financial health.