"Here"

[southUS]

I know that the word for here is "aqui", but what if I'm using it in this context:

Here's another invoice that you need to pay.

My guess would be:

Aquí esta otra factura que tu necesitas pagar.

[Rusty]

Aquí está otra factura que necesitas pagar. (Note that it's not necessary to use tú.)

With the changes noted above, your translation is fine.

[AngelicaDeAlquezar]

Another alternative: Aquí hay una factura....