* She will have to declare all her earnings from Suits but will also have to say if Prince Harry is giving her an allowance of more than $100,000 (£71,600)
* Markle must declare gifts worth a total of more than $100,000 too - which include the value of her engagement ring
* Markle, 36, will also have to say if she is getting a benefit in kin by living in Nottingham Cottage with Prince Harry without paying rent
* When the two get married any joint accounts and trusts will have to be declared as long as she is a United States citizen, accountant Alistair Bambridge says
* Markle would have to renounce citizenship to end the annual declaration to the IRS; she is currently living in London on a family visa
Meghan Markle is facing one last date with another man before her wedding to Prince Harry- an appointment with the US taxman.
The actress, 36, will have to declare any money she and Harry, 33, have made together since they started living together.
And her tax return, which must be submitted to US authorities by April 17, will give the Internal Revenue Service an unprecedented look at the British monarchy's finances.
Tax laws mean that even if Los Angeles-born Meghan lives full-time in the UK, she will still have to file a US return every year.
'Of course this raises the tantalizing prospect of Uncle Sam getting a look behind the velvet curtain - and seeing the private finances of the Royal Family,' US tax specialist Alistair Bambridge, of Bambridge Accountants, told DailyMail.com.