I need to have the ability to directly pay TDS from Zoho Books via my TAN number. It is a basic feature. I use ICICI bank so its directly integrated with Zoho but inabliltiy to pay TDS directly is a pain since then I need to sit and record this as an expense and then also match each invoice (esp. when we pay multiple bills under a single TDS challan).

I would expect this to be a priority feature that needs to be prioritized in your roadmap.