Payments on account are not always the final bill
Once the final income-tax assessment arrives, contributions may be reconciled with payments on account. Depending on the applicable rules, this can create an additional charge or a credit.
What should we check?
The year, income basis, National Insurance status and credited payments. Mention any concurrent employment or change in activity. The calculation is not necessarily a direct copy of the final income-tax figure.
Some circumstances need a closer look
For example, certain work-injury benefits can lock the income basis at its pre-injury level. If you received a relevant benefit, mention it. Before deciding that the notice is wrong, review the figures and your particular circumstances.
Sources and further information
- National Insurance Institute — self-employed income basis and reconciliation ↗
- National Insurance Institute — benefits that lock the income basis ↗
This is general information within the scope discussed. It sets no filing deadlines, penalty amounts or outcome for an individual file. Annual guides are used for general principles only, not to carry forward thresholds from earlier years.