I couldn't find any proper tabs on here, i worked this out by ear and I believe 
it's pretty close if not correct!

Chord shapes for this song:

Bb (x1333x@1)Bb/A  Bb/G (20222x@1) Bb/F (102220@1) D (xx0232@1) Dsus4 (xx0233@1) G (320003@1)  G/E (020003@1) Bm7 (x20202@1)Bm7/A (x00202@1)Am (x02210@1)   C (x32010@1)  Dm7
x-----x-----x-----x-----2-----3-----3-----3-----2-----2-----0-----3-----5
3-----3-----3-----3-----3-----3-----3-----3-----3-----3-----1-----5-----6
3-----3-----3-----3-----2-----2-----4-----4-----2-----2-----2-----5-----5
3-----3-----3-----3-----0-----0-----5-----5-----4-----4-----2-----5-----7
1-----0-----0-----0-----0-----0-----5-----5-----2-----0-----0-----3-----5
x-----x-----3-----1-----x-----x-----3-----0-----x-----x-----x-----x-----x

Intro
Bb  Bb/A  Bb/G  Bb/F  D  Dsus4  D

Verse
       G (320003@1)     G/E (020003@1) Bm7 (x20202@1)    Bm7/A (x00202@1) D (xx0232@1)  Dsus4 (xx0233@1)DAre (xx0232@1)you hanging up a stocking on your wall?
         G (320003@1)  G/E (020003@1)      Bm7 (x20202@1)Bm7/A (x00202@1)D (xx0232@1) Dsus4 (xx0233@1)DIt's (xx0232@1)the time that every Santa has a ball

C (x32010@1)              GDoes (320003@1)he ride a red nosed reindeer?
        C (x32010@1)            GDoes (320003@1)he turn up on his sleigh
       Am (x02210@1)             C (x32010@1)         D (xx0232@1) Dsus4 (xx0233@1)DDo (xx0232@1)the fairies keep him sober for a day?

Chorus
        G (320003@1)         Bm7So (x20202@1)here it is merry Christmas
     BbBb/A (x1333x@1)Bb/G (20222x@1)name="chord_102220@1">Bb/F   D (xx0232@1) Dsus4 (xx0233@1)DEverybody's (xx0232@1)  having     fun
G (320003@1)         Bm7Look (x20202@1)to the future now
     Bb (x1333x@1)   Bb/A  Bb/G (20222x@1)name="chord_102220@1">Bb/F  D (xx0232@1)Dsus4 (xx0233@1)name="chord_xx0232@1">D
It's only   just  be-g--u--n

Verse
Are you waiting for the family to arrive?
Are you sure you got the room to spare inside?
Does your granny always tell ya
that the old songs are the best?
Then she's up and rock 'n' rollin' with the rest

Chorus
So here it is merry Christmas
Everybody's having fun
Look to the future now
It's only just begun

Bridge

Dm7                  Bb (x1333x@1)                  
What will your daddy do
                  Dm7          BbWhen (x1333x@1)he sees your Mama kissin' Santa Claus?
     C---D
(ah) ah ah

Verse

Are you hanging up a stocking on your wall?
Are you hoping that the snow will start to fall?
Do you ride on down the hillside
in a buggy you have made?
When you land upon your head then you've been Slade

Chorus

So here it is merry Christmas
Everybody's having fun
Look to the future now
It's only just begun



the chorus just repeats at the end, thanks, any questions or corrections then 
contact me - sam_moppo@hotmail.co.uk :)