“Kotecha” is mainly a surname, not a single fixed Jain gotra.

In Jain samaj, especially among Oswal Jains, the situation is usually:

• Main gotra: often Kataria
• Up‑gotra / sub‑branch: Kotecha (or Kocheta)
• Many such families follow Śvetāmbara Jain tradition (some Sthānakvāsī, some Mūrtipūjak).

But:

• Some Kotecha families are not Jain (e.g., Lohana Vaishnavs).
• Exact gotra can differ by family line, so the most accurate answer comes from your family elders, kul‑purohit / kul‑guru, or old family records (like pattāvalī, kul‑vṛkṣa, or old invitations).

For a short Jain-focused discussion on the “Kotecha” surname in Jain context, you can read more here