What it means
The US taxes residents and non-residents differently. Residents are generally taxed on their worldwide income at normal graduated rates, while non-residents are taxed mainly on income from US sources, and often through withholding at a flat rate.
A person who is a foreign national but qualifies as a US resident for tax purposes, for example by holding a green card or by meeting the substantial presence test, can be caught out by this difference. If a payer treats them as a non-resident, it may withhold tax at the wrong rate.
Form 1078 was designed to solve that problem. By signing it, the alien certified that he or she was a US resident and asked the payer to treat income accordingly.
It was a simple way to put the claim on record. The form was normally handed to the payer, such as an employer, bank or broker, who relied on it when deciding how much tax to withhold.
The payer kept it on file as evidence that the correct withholding treatment was being used. If the tax authority later asked why a particular rate was applied, the certificate was the supporting document.
Today, the most common way for a US resident to certify status to a payer is the request for taxpayer identification number and certification (Form W-9), while non-residents use the W-8 series. The older form still appears in reference lists and in the history of tax compliance, so finance professionals may meet it when reviewing historical records.
The nuance is that tax residence is a legal test and cannot be chosen by filling in a form. If the facts do not support the claim, the certificate does not change the person's real status and can create penalties.
In practice
Real-world examples.
Example
A software engineer from abroad holds a green card and receives interest from a US bank account. She gives the bank a certificate of residence so that the bank does not apply non-resident withholding to her interest. The bank keeps the certificate in her customer file.
Example
A visiting professor stays in the US for long enough to meet the substantial presence test. His university payroll asks for confirmation of his residence status before it sets the withholding on his pay. The payroll team checks his days of presence against the test and records its conclusion.
Example
A compliance officer at a regional bank audits old customer files and finds a Form 1078 from a customer who opened an account decades ago. She checks whether the customer's status has changed and requests a current form. The old document is kept in the archive, as the bank has a duty to retain records for a set period.
Case study
Seen in the real world.
Elmhurst Credit Union is an illustrative, fictional lender that was reviewing its tax documentation for customers born abroad. In the process, the compliance team found a small number of old files with a Form 1078 and no more recent certificate.
The team realised that the status of some customers could have changed in the intervening years, since people can move abroad, gain citizenship or lose resident status. The credit union contacted these customers and asked them to provide current forms.
In this illustrative case, the exercise resulted in several corrected withholding records and a better file refresh policy. It also gave staff a short guide explaining which form applies to which type of customer. The lesson was that tax status certificates should be refreshed regularly and not treated as permanent. The credit union now schedules a periodic review of tax documentation for all account holders.
Watch out
Common mistakes.
- Assuming a signed certificate makes someone a US tax resident, when residence depends on legal tests such as the green card or substantial presence tests.
- Keeping an old certificate on file indefinitely, when a person's status can change over time.
- Confusing it with forms used by non-residents, when different forms apply depending on whether the person is a resident or not, and a wrong form can lead to incorrect withholding.
Questions
People also ask.
Who gives Form 1078 to whom?
The person claiming residence gives it to the payer, who keeps it as evidence for the correct tax treatment.
Is Form 1078 still widely used?
It is now uncommon, and payers usually ask for the current standard forms, so check with the payer or a tax adviser. Rules and forms change over time, and a current answer matters more than the historical one.
What is the substantial presence test?
It is a formula based on the number of days you are physically in the US over a three-year period, which can make a visitor a tax resident. It counts days in the current year in full and gives reduced weight to days in the two years before.
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