がある (gaaru) Meaning Japanese Grammar - There Is

The same verb ある can be used in combination with the particle は instead of が: はある. However, はある has a different meaning, which derives from the sense of comparison and contrast expressed by the particle は. When we use はある we are in fact saying that something exists, but the rest isn't there. Let's see an example to understand this nuance:

In this example the answer uses がない. がない indicates that there is no money (金(かね)), without specifying or implying any extra information. Instead we see the same situation with はない:

In this case the use of the particle は in はない indicates a sense of contrast: there are no money, but I may have something else (I don't have money (but I have something else...)). In fact, はない is used to indicate that the noun that precedes (金(かね)) is not there, but I want to imply that there is something else. はある is often found in combination with expressions that indicate contrast: けど, が, けれども

Let's see another example, in this case with the expression 時(じ)間(かん)がない and 時(じ)間(かん)はない:

In this example we notice from the tone of voice how critical the situation is. The character shouts that There is no time using the particle は. The use of は emphasizes the fact that at the moment there is absolutely no time to do the above (そんな).