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8.23. For compensation of employees, data come from: (i) the travel models which estimate, inter alia, wages and salaries earned by Australian travellers and workers abroad and foreign travellers and workers in Australia; (ii) the Foreign Embassy Expenditure Model which measures earnings by Australian residents working for foreign embassies in Australia; and (iii) the Commonwealth Ledgers, which measure the wages and salaries paid to local employees of Australian embassies and military bases abroad. For investment income most data come from the Survey of International Investment, the Portfolio Investment Income on Debt Securities Model and the Insurance Model. Data sources and methods are explained in more detail in table 8.3.

	8.3 SUMMARY OF SOURCES AND METHODS - INCOME
	Component	Sources of data	Method of estimation
	Compensation of employees	Travel by Australian Residents Model (TARM) Foreign Embassy Expenditure Model (FEEM)	Credits consist of wages and salaries, etc. earned by Australian residents working abroad (derived from TARM) and Australian residents working for foreign embassies (FEEM).
		Travel by Foreign Residents Model (TFRM) Foreign Students in Australia Model (FSAM) Commonwealth Government Transactions (Ledgers)	Debits consist of wages and salaries, etc. earned by non-residents working in Australia derived from TFRM and a small amount from FSAM) and local employees working for Australian embassies and military bases abroad (Ledgers).
	Investment income
	Direct investment income	Survey of International Investment (SII)	The SII provides data for the compilation of dividends, distributed branch profits, reinvested earnings and undistributed branch profits. It also provides data on interest accrued on direct investment debt. The SII measures both the credit and debit components.
	Portfolio investment income	Survey of International Investment (SII)	For dividends credit, data for trading and financial enterprises are reported in the SII. For dividends debit, data are reported by trading enterprises, nominees and other financial enterprises in the SII.
		Accrued Income on Debt Securities Model (AIDSM) Survey of International Investment (SII)	For interest on debt securities credit (excluding reserve assets), data are derived from AIDSM. For interest earned on official reserve assets, including income on debt other than securities, data come from SII (Reserve Bank component). For interest on debt securities debit, data come from AIDSM.
	Other investment income	Survey of International Investment (SII) Insurance Model (IM)	For credits and debits, data on interest earned for trading and financial enterprises come from SII; income on official reserves related liabilities comes from SII data collected from the Reserve Bank; and data for the offsets to premium supplements come from the Insurance Model.