@curiousvi SGB has 2 major advantages over physical gold
It pays an interest (2.5% to 2.75% based on the series)
it can be pledged for trading
To get max interest benefit - the tenure has to be the longest. Since you can exit it most of the time (according to liquidity) there is theoretically no harm in taking the max tenure possible.
No one would really know if gold will fall in value sometime in the future - so an outright buy cannot be determined per se at the current trading price.
The only disadvantage is - you dont own gold. After the tenure, the amount gets returned to you. And if you so desire can buy at the market price then.
I second @viswaram
No one really knows where gold prices will be in short or long term. Better go for long term and reap ~2.5% plus pledge and short long term far otm index options (only if you are willing to risk it) and make some extra on the side. Or you can also do your regular trading related activities as SGB are treated as cash equivalent.
All depends on what you want to do with SGBs , most of the guys buy SGB for two reasons
Blind hedging for their equity portfolio
To get liquid collateral
In both cases if you keep the SGBs for longer term more than 5 years you get tax benefit in terms of LTCG + 2.5% interest till the time you keep
so if you buy any SGB and keep for 5 years LTCG is same , But 2.5% interest varies and depends on the issue price .
so I would suggest go for the issue price which has the max issue price . just to reduce your research time
SGBmar31iV issue at ±5600
SGBdec30III issued at ±5300
these are the highest issue prices , but if you go for nearest to mature i.e issued in 2018 at rates of 3500- 4000 you will get less interest .
I am not seeing any benefit to buy near to mature SGB till date so go for highest issue price SGBs and max maturity+ no need to pay other charges/brokerage multiple times