If I issue advance invoices in 2023 for services that I will only provide in 2024, should I declare these in the 2023 financial year (the year of deferral) or 2024 (the year of services)? I have found conflicting information online. Thank you in advance.
I enter them on the date on which the advance payment was received and also write out the advance invoice at that time. The state has never objected because I paid on time ;-) I also settle the account at the time of completion in accordance with that date.
You really should try it out for yourself. Even if you don’t have a company number yet, you can already go ahead.
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