TextInputLayout :How to give padding or margin to hint?

The solution proposed by ganesh2shiv works for the most part, although I've found it also de-centres the hint text displayed inside the EditText when not focused.

A better trick is to set the desired paddingTop to the EditText but also embed the extra padding within the EditText's background. A fairly sane way to do this is to wrap your original background in a <layer-list> and set the <item android:top="..."> attribute to match the paddingTop of your EditText.

<android.support.design.widget.TextInputLayout
  android:layout_width="match_parent"
  android:layout_height="wrap_content">

  <EditText
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:paddingTop="@dimen/floating_hint_margin"
    android:background="@drawable/bg_edit_text" />
</android.support.design.widget.TextInputLayout>

And the bg_edit_text.xml drawable file:

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
  <item android:top="@dimen/floating_hint_margin">
    <your original background; can be <bitmap> or <shape> or whatever./>
  </item>
</layer-list>

I have been looking for the solution to this question from last couple of days myself. After tearing my hairs out for hours I have finally found a simple workaround. What I have noticed is that if you have custom background set on EditText the android:paddingTop attribute simple doesn't work to alter the spacing b/w the hint text and edit text (I have really no idea why). So if you have set custom background to your EditText, you can use android:translationY attribute in the EditText.

So here's your solution:

<android.support.design.widget.TextInputLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginLeft="30dp"
    android:layout_marginRight="30dp"
    android:layout_marginTop="10dp"
    app:hintTextAppearance="@style/TextHint">

    <EditText
        android:id="@+id/edttxtEmailAddress"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:background="@drawable/rounded_common"
        android:hint="@string/enter_valid_email"
        android:paddingLeft="20dp"

        android:translationY="10dp" 

        android:singleLine="true"
        android:textSize="20sp" />
</android.support.design.widget.TextInputLayout>

Hope it helps. :)

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Update: My sincerest apologies for the late update. I have been really busy lately. If you haven't realized yet let me tell you this answer is straight out ugly and wrong. In retrospect I think I was probably drunk when I wrote it. As mentioned by others it might cut the bottom region of the editText background but there's an ugly fix for it as well - you can set the height of the (parent) textInputLayout sightly bigger (how big? you are supposed to find it by trial and error, yuck!) than the (child) editText. I hope you all do realize that would be crazy so please don't do it. Check out the answer written by @Radu Topor, it's by far the best and clean solution to this question. Thanks.