Calculators with their assumptions on the outside
Every one of these is a scenario under inputs you choose, not a forecast and not an offer. The most useful thing you can do with them is set the pessimistic inputs and see what still works.
Investment growth
What a regular monthly contribution compounds to over time. Useful for sizing a plan, not for predicting one.
An assumption you are choosing, not a rate anyone is offering you.
India's target band tops out at 6%. Set it to 0 to see the nominal figure alone.
₹1.15 Cr
What it grows to in 15 years
You will have paid in ₹45.00 L of that.
₹47.87 L
What that buys in today's money
Inflation at 6% takes ₹66.85 L of it, or 58%.
- Portfolio value₹1.15 Cr
- What you put in₹45.00 L
Sovereign Gold Bond returns
Gold appreciation plus the 2.5% annual coupon, held for the full eight-year tenor. The coupon is what separates an SGB from holding the same metal.
Enter the current issue or market price per gram.
Gold has had multi-year periods of negative return. Try a negative value.
Why the coupon matters
The 2.5% annual interest is paid on your original investment, not on the current gold value. Over eight years it adds 20% of your starting amount regardless of what gold does — which is the whole reason an SGB can beat holding the same metal.
₹10.25 L
Held as a bond to maturity
9.39% a year, including the 2.5% coupon and the capital gains exemption at maturity.
₹9.25 L
The same gold, held as metal
No coupon. ₹1.00 L less, before storage and before the duty and GST you paid on the way in and do not get back.
- Bond, all in₹10.25 L
- The metal alone₹9.25 L
- Coupon accumulated₹1.00 L
Mining payback
Whether a rig earns back its purchase price, given rising network difficulty and the electricity it burns every day. Both are mandatory inputs here.
Look this up for today before trusting the result — it changes constantly.
Costs ₹17,899 a month to run.
Set this to zero and the model becomes a sales pitch.
Try a negative value. Falling prices are how mining ventures fail.
Never
Hardware pays for itself
On these inputs it does not pay for itself within your horizon.
Month 12
Power costs more than it earns
Past that month it loses money every day it stays switched on.
- Cumulative, after hardware₹-1.96 L
- Revenue a month₹7,296
- Power a month₹17,899
The dashed line is break-even on hardware. Cumulative net is plotted against its own scale, since it is a running total rather than a monthly figure.
On these inputs the hardware does not pay for itself within four years. Net income over four years after power and fees is ₹-1.96 L, against a hardware cost of ₹6.00 L.
A number in a calculator is not a return
Each of these tools compounds an assumption you supplied. Change the assumption and the answer changes completely, which is exactly why we show you the inputs instead of a single headline figure. If any firm shows you a projected return without letting you move the inputs, that is worth noticing.