I am not using a filter with the IFB machine... not an expert - but doubt if its really needed.

I have been using a front-load IFB machine without a filter for a few years now.
However, the quality of water you get from your taps would probably matter.

Hard water does not give good lather and can also damage metals and plastics.
To that end, if you get hard water, you may need a water softener.
Here is one reference I came up with on Domestic Water Softeners.
Check if these points make sense for your conditions.
^{Here is another reference: you may not need any of these 3 points, but its good to know.}

I've used washing machines for years without the water filter being needed. They haven't been IFB (whirlpool & lg) and they've been top-loading, but still, I don't think that should be an issue.

hye tat product rate reduce for rs 1800/. some wat that filter reduce the hardness,,