overpayment
Overpayment means you have paid the tax office more than you actually owed, and yes, they are supposed to give it back to you.
In plain English
Here is the part that surprises most people: giving the government too much money is a real thing that happens, and it happens more often than anyone likes to admit.
Overpayment is exactly what it sounds like. You paid more tax than the law required, whether by mistake, by your employer's payroll calculation being off, or because you paid estimated tax through the year and then your actual income turned out lower than expected.
In Nigeria, this shows up a lot with PAYE. Say you worked at a company in Lagos from January to July, left, and stayed unemployed for the rest of the year while your former employer had already deducted tax based on a full year's salary projection. You overpaid, because tax was calculated as if you earned that salary for twelve months when you only earned it for seven.
In the UK, HMRC deals with this constantly through PAYE too. Someone changes jobs mid year, or gets put on the wrong tax code, and ends up handing over more than they should. HMRC actually owes millions of pounds in refunds every year to people who never bothered to check.
For the diaspora reader sending money home or filing across two tax systems, overpayment can calmly stack up on both sides if withholding is not tracked properly. Nobody chases this money for you. You have to ask for it.
The frustrating truth is that overpayment does not fix itself. The system will happily keep your extra money unless you notice, apply, and follow through to claim a refund.
Adaeze earned ₦8,000,000 in the year but her employer's payroll system deducted PAYE as though she would earn that amount from January to December, even though she resigned in August. Her tax was calculated on a false full year projection. When she filed a claim with supporting documents, she found she had overpaid by ₦180,000, which the tax office was required to refund.
Questions people ask
How do I know if I have overpaid tax?
Compare what was actually deducted from your salary or paid in estimated tax against what your real income for the year required. If your job ended early, your income dropped, or your employer used the wrong figures, there is a good chance you overpaid. A tax preparer or the tax office itself can confirm the exact amount.
Do I automatically get a refund if I overpay?
No, sadly not automatically in most cases. You usually need to file a claim, provide evidence of the overpayment such as payslips or a tax clearance certificate, and sometimes wait months for processing. The money is yours, but you have to ask for it properly.
Can overpayment happen even if I did my own taxes carefully?
Yes, because overpayment often comes from things outside your control, like an employer's payroll software using outdated assumptions, or income estimates that turn out higher than what you actually earned. Careful people overpay too, it is simply how the withholding system works.
Last reviewed