When resigning from a job, it often takes weeks or months for your final settlement to be processed. If this occurs during a financial year change, it can increase your taxable income significantly. For example, if you resign in February 2026 and receive your final settlement in April or May 2026, this lump sum could elevate your income for that year, potentially placing you in a higher tax bracket. To mitigate this, it is crucial to file Form 39 under the new Income Tax Act, 2025, which replaces the previous Form 10E. This form allows taxpayers to claim relief under Section 89(1) of the Income Tax Act, 1961, which provides tax relief for income received in a different year. Chartered Accountant Suresh Surana highlights that Form 39 improves the filing process with features like auto-population of details, real-time validations, and structured formats that enhance accuracy and reduce compliance burdens. The ITR filing deadline for the 2026-27 tax year is July 31, 2027, making it essential for individuals to prepare in advance to avoid higher tax liabilities.