(a) The currency that the borrower wants to obtain
Multinational companies usually want to borrow in foreign currency to reduce their foreign exchange exposure and therefore borrow in euromarkets rather than the domestic market.
(b) The cost
There is often a small difference in interest rate between eurocurrency and domestic markets. On large borrowings, however, even a small difference in interest rate result in a large difference in the total interest charged on the loan.
(c) Timing and speed
It may be possible to raise money on the euromarket more quickly than in the domestic markets.
Euromarket loans are usually unsecured. Whereas domestic market loans are more commonly secured. Large borrowers may therefore prefer euromarkets.
(e) The size of the loans
It is often easier for a large multinational to raise very large sums on the euromarkets than in a domestic financial market.