Fighter pilots do receive several additional allowances beyond their basic pay contrary to the notion that they don't. Let’s look at the facts:
In India, a newly commissioned Flying Officer (the rank typically held by fighter pilots early in their careers) starts with a basic pay of INR 56,100. On this they receive a Military Service Pay (MSP) of INR 15,500 per month.
Moreover they are entitled to a Dearness Allowance (DA) to adjust for inflation currently at 28% of the basic pay (and MSP) which amounts to roughly INR 15,700.
Crucially because of the specialized and demanding nature of their work fighter pilots also receive a Flying Allowance of INR 25,000 per month. This recognizes the skill responsibility and operational risk associated with piloting fighter aircraft.
They also receive a Transport Allowance, approximately INR 7,200 per month for officers posted in X-class cities plus DA on that amount (around INR 2,000). And there's a small Kit Maintenance Allowance about INR 600 monthly for upkeep of uniforms and gear.
When all these components are combined the gross monthly salary of a newly commissioned Flying Officer (especially those in the flying branch) works out to be approximately ?1,22,024.
So to directly address the question: Yes fighter pilots do receive extra allowances not only a basic pay but also additional compensation like MSP DA Flying Allowance Transport Allowance and Kit Maintenance Allowance. These are quite significant and reflect the risks, expertise and lifestyle demands of the role.