# What is Tinbergen's “all other income when paid out” measuring?

In When it all began by Dhaene and Barten (1989), the authors discuss in detail what they claim was the first ever macroeconometric model, Tinbergen's 1936 model of the Netherlands economy.

Some of their summaries of Tinbergen's variables are a bit vague though.

What, for example, is $E$, described as "All other income, when paid out"?

By checking other variables, you can confirm that the variable letters are equivalent in this and your reference. Then, $E$ stands for "all non-wage income, taken at the moment received, instead of take when earned".
This is a standard differentiation between the time an income has been accrued ($Z$) and when it has actually been received ($E$).
You can see more about these definitions later on in the document. In page 49, you find an explanation on how these are calculated (19 is $Z$, 20 is $E$; see table in page 47-48):