“I am financially independent.”

“We are financially secure.”

I don’t think you really should ever be starting a sentence with, “I got a…” as related to money. Unless you are going to end the sentence with, “big wad of cash.” It’s not the most professional way to put it.

If it is an important consideration, as when talking to a banker or financial advisor, then we say “My account has $xxxxx in it.” There’s no need to BS the people that need to know facts.

If we are talking generally or socially, the amount in our bank account isn’t polite conversation.

In those few cases where I need to explain, I simply write that “my retirement is adequately funded” or “I have sufficient cash assets for a comfortable retirement”

The way in which interest rates pay these days you should consider investing in a CD or a money market fund that is FDIC insured.

Why do you find the need to tell people about your bank account?

1) solvent (as in: I believe my bank account is sufficiently solvent to meet any financial contingencies.) – my recommendation

OR

2) copious (as in: I own a rather copious bank account)

B. If you are writing a love letter or anything of an amorous nature, try

1) considerable (my considerable savings will help support/propel us for years to come)

2) adequate …

3) …

However, need more info to give you an optimal expression.

I have a solid bank account

I have a sound bank account

I have a substantial bank account

I have a strong bank account

I have a firm bank account

I have a sizable bank account

I have a sturdy bank account

I have a stable bank account

You could say you have a sufficient bank account

I have a large bank account

I have a fat bank account

I have a healthy bank account.

Hope this helps.