If your parents' current income is substantially lower than before, a BAföG calculation based on older income information may not reflect the family's present circumstances. An income updating application may be worth discussing. It is not an automatic additional payment and needs to be considered against the particular facts.
Describe the change and relevant period
First establish why income fell and when the change began. Reduced working hours or loss of a job are possible examples. Use the evidence and periods requested by the office. One unusually low monthly payment does not necessarily describe income over the entire relevant year.
Studierendenwerk Bonn refers to Formblatt 07 for an income updating application when current income has fallen. Ask your responsible office whether this route fits and what forecast is required. Do not confuse reduced parental income with a family payment merely arriving late; that may involve a different issue and require different advice.
Estimated figures can be reconciled later
An updated assessment may use income that is not yet final. Studierendenwerk Siegen explains that support can be subject to recovery and reviewed once the actual income is known. A higher payment should therefore not be treated as an amount that can never change.
In a hypothetical case, the initial forecast assumes several months without employment income. If the parent finds a new job sooner than expected, the actual annual position may differ. Report relevant changes as required by the office and retain the later evidence needed for the final assessment. Keep a record of the forecast submitted as well as the documents eventually confirming income.
Discuss the immediate household position too
Clarify what family support is actually possible this month. A pending updating application does not itself pay rent falling due now. Make a short transition plan showing confirmed payments and unresolved items. If money is urgently short, student social advice can help order the next steps by priority.
Avoid assuming that the application must produce a particular increase. The individual decision determines the outcome. The purpose is an accurate assessment of changed circumstances and a budget capable of handling uncertainty, rather than covering that uncertainty immediately with a long-term borrowing commitment.



