The most common and most likely answer to this crossword clue is the 6 letter word FISCAL
I've seen this crossword clue in Financial Times
F
I
S
C
A
L
More clues leading to the result FISCAL
- Some editor-in-chief is calling regarding the Treasury
- Relating to capital of Salafis' caliphate
- Part of brief is calculation of public revenues
- Like taxes, if backed, go up mostly
- Entry in brief is calculation relating to tax revenues
- Budgetary control initially fails disastrously
- Financial relief is calculated to a limited degree
- Tax free investments started by southern California
- Economic leaders in league, as commercial system is fouled up
- Criminal fails to hide first of crimes from Revenue
Buddy explains!

The straight part
We know that "Economic" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case economic = fiscal.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does FISCAL mean?
FISCAL noun- A public official in certain countries having control of public revenue.
- Procurator fiscal, a public prosecutor.
- In certain countries, including Spain, Portugal, the Netherlands, and former colonies of these countries and certain British colonies, solicitor or attorney general.
- Related to the treasury of a country, company, region or city, particularly to government spending and revenue.
- Pertaining to finance and money in general; financial.
- Any of various African shrikes of the genus Lanius.