Bonus Pay Percentage for Non Sales?

Hello all. First time writing here. I am considering a new job opportunity and have an offer on the table. Below are the details:

- Age: 26

- Sector: Banking

- Department: IT

- Total Package: USD 100k Year 1, USD 115k Year 2, Year3+ who knows.

Distribution:

- 10k in Benefits (e.g. Vehicle, Gas, Maintenance, Gym, etc). This is cash that is not payed to me directly but rather reimbursed for those specific purchases.

- 50k Base Pay.

- 40k Performance Bonuses.

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I am satisfied with the yearly compensation, it is the high weight of the performance bonus that seems odd to me. I would expect that from either a sales position, or eventually a very very high executive level.

The advice I'm seeking is the following: For those in Banking Sector or in IT, is this standard? If not, then what is realistic to negotiate this package?

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Appreciate the comments beforehand.

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Thanks!