Need Help with TDS Deduction on Rent – Discrepancy in TDS Credit

I am facing a baffling issue with TDS deduction on rent.

I rent a property and deduct 5% TDS from the rent as per the IT rules. Since I don’t have a TAN, I’ve been depositing this TDS monthly via the Income Tax e-filing portal.

However, I’m confused by two fields in the portal:

1. Value of rent paid in the last month
2. Amount paid/credited

I’ve been entering the following:

• Field 1: Full rent amount (X)
• Field 2: Rent amount after deducting 5% TDS (X - 5%)

I thought this was correct, but now I’m encountering a major issue:

1. I have deposited TDS for April to December (except for June, which I missed).
2. The property owner informed me of a discrepancy in the TDS credit reflected on their side.
3. On my Form 26AS, the TDS credit for April–September is consistently 5% less than expected, while for October–December, it’s 62% less (a seemingly random and much lower amount).

To clarify with an example:

• If the rent is ₹1,000 per month, I deduct ₹50 as TDS and remit ₹950 to the owner.
• However, the TDS credit reflected for the owner is only ₹48.5 for April–September and significantly lower (62% less) for October–December.
• Challans and receipts on my end correctly show the full TDS amount of ₹50.

I consulted a CA, and even they are puzzled. They suspect that some unclaimed challans or automatic calculations could be causing this. The CA suggested checking for unclaimed challans or raising a grievance on the IT portal. However, they warned that this might be a tedious and time-consuming process but are on the job.

While they figure it out:

Has anyone faced a similar issue, or does anyone have insights into:

1. Why this discrepancy might occur?
2. Easier remedies than filing a grievance?

Any help would be much appreciated.