Chapter 5 · Week 5 — The Estimated Return and Advance Tax
The Estimated Return and Advance Tax
Forecasting a year's tax before it happens, the safe-harbour test, and why revising the estimate mid-year is the whole skill.
5 of 8 · 7 min
Nepal does not wait until the year ends to collect. You estimate what you will owe, pay it in instalments during the year, and settle the difference on the annual return. Get the estimate wrong in the wrong direction and interest attaches.
5.1 Why the estimate exists
TWO WAYS A STATE COULD COLLECT INCOME TAX
┌──────────────────────────┐ ┌──────────────────────────┐
│ WAIT FOR THE YEAR TO │ │ COLLECT AS THE INCOME │
│ END, THEN COLLECT │ │ IS EARNED │
│ │ │ │
│ simple for the taxpayer │ │ government cash flow is │
│ government has no cash │ │ smooth │
│ flow for twelve months │ │ taxpayer must FORECAST │
│ collection risk is high │ │ collection risk is low │
└──────────────────────────┘ └──────────────────────────┘
▲
│
Nepal does thisThe cost of the second design is pushed onto you: you must estimate your full year's tax before the year is over, and be roughly right.
5.2 The module
ESTIMATED RETURN folder in the portal Estimated Return Entry ← the ENTRY door Estimated Return D02 Entry ← the presumptive-route variant Estimated Return Login ← the LOGIN door Note the D02 variant. Taxpayers on the turnover route (Week 2) estimate differently, because their tax is computed differently.
5.3 The instalment mechanic
┌──────────────────────────────────────────────────────────────┐ │ │ │ ESTIMATED TAX FOR THE YEAR │ │ │ │ │ ├──► instalment 1 a % of the estimate, by a date │ │ ├──► instalment 2 a further %, by a later date │ │ └──► instalment 3 the balance of the % due [R] │ │ │ │ Then, after year end: │ │ │ │ ANNUAL RETURN actual tax computed │ │ − instalments paid │ │ − TDS suffered │ │ ═══════════════════ │ │ balance payable or refundable │ │ │ └──────────────────────────────────────────────────────────────┘
Drawn against the fiscal year:
Shrawan ─────────────────────────────────────────── Ashad
│ │
│ ▲ ▲ ▲ │
│ │ │ │ │
│ instal 1 instal 2 instal 3 │
│ │
│ ◄──── you are FORECASTING this whole period ────► │
│ │
└────────────────────────────────────────────────────────┘
│
▼
annual return settles up
(months after year end)The first instalment is the hard one. You are being asked what your profit will be for a year that has barely started.
5.4 The safe-harbour idea
The Act does not require a perfect forecast. It requires one within a margin — and the design of that margin is what you need to understand. [R]
┌────────────────────────────────────────────────────────┐ │ │ │ IF estimated tax ≥ (safe margin) × actual tax │ │ THEN no interest on the shortfall [R] │ │ │ │ IF estimated tax < (safe margin) × actual tax │ │ THEN interest runs on the under-paid instalments, │ │ from each instalment date │ │ │ └────────────────────────────────────────────────────────┘
Worked example — the cost of under-estimating.
ILLUSTRATIVE. Assume a 90% safe-harbour and a 15% annual
interest rate on shortfall; substitute the real ones. [R]
A company estimates and pays through the year:
Estimated tax for the year Rs 800,000
Instalments paid on that basis Rs 800,000
The year actually turns out:
Actual tax on the annual return Rs 1,400,000
TEST
Required minimum = 90% × 1,400,000 = Rs 1,260,000
Actually paid = Rs 800,000
─────────────
Shortfall = Rs 460,000
INTEREST
The shortfall did not appear at year end — it was
missing from each instalment. Interest runs from each
instalment date, not from the filing date.
Roughly, on an average outstanding period of ~6 months:
460,000 × 15% × (6/12) ≈ Rs 34,500
paid ON TOP of the 600,000 balance still owed.
┌──────────────────────────────────────────────────────┐
│ Under-estimating is not free deferral. It is a │
│ loan from the tax authority at a rate you did not │
│ negotiate. │
└──────────────────────────────────────────────────────┘And the reverse:
OVER-ESTIMATING
Estimated and paid Rs 1,800,000
Actual tax Rs 1,400,000
──────────────
Overpaid Rs 400,000
You get it back — as a refund or a credit — but:
• no interest is paid to you on it in most cases [R]
• the money was unavailable to the business all year
• refunds take time to process
THE ASYMMETRY
under-estimate → interest charged against you
over-estimate → an interest-free loan TO the state
The optimum is not "estimate high to be safe". It is
"estimate accurately, and revise when the year moves".5.5 Revising the estimate
This is the part most filers do not use, and it is the answer to the asymmetry above.
THE ESTIMATE IS NOT A ONE-OFF DECLARATION
Shrawan Poush Chaitra Ashad
│ │ │ │
▼ ▼ ▼ ▼
estimate 1 → revise? → revise? → final position
made blind Q2 actuals Q3 actuals
known known
By the second instalment you have half a year of real
numbers. By the third you have most of the year. An
estimate that never moves is an estimate that ignored
the information that arrived. [R]Worked example — revising mid-year.
ILLUSTRATIVE.
Shrawan: estimate built on last year
Last year's taxable income Rs 4,000,000
Assume similar Rs 4,000,000
Estimated tax at 25% Rs 1,000,000
Instalment 1 (say 40%) Rs 400,000 paid
Poush: half-year actuals are in
Half-year profit Rs 3,100,000
Annualised Rs 6,200,000
Revised estimated tax at 25% Rs 1,550,000
Cumulative due by instalment 2 (say 70%)
= 70% × 1,550,000 Rs 1,085,000
Already paid Rs 400,000
─────────────
Instalment 2 payment Rs 685,000
Had the estimate not been revised, instalment 2 would
have been 70% × 1,000,000 − 400,000 = Rs 300,000 —
leaving Rs 385,000 under-paid and accruing interest
from that date.5.6 Estimating when you have no history
THE FIRST-YEAR PROBLEM No prior return. No trend. What do you estimate? ┌────────────────────────────────────────────────────────┐ │ BUILD IT FROM THE PLAN, NOT FROM ZERO │ │ │ │ projected revenue from contracts, orders, │ │ the business plan │ │ × expected margin │ │ ───────────────── │ │ projected taxable income │ │ × rate [R] │ │ ───────────────── │ │ estimated tax │ │ │ │ Then REVISE at every instalment as real numbers │ │ replace projected ones. A first-year estimate is │ │ expected to move; a third-year one is not. │ └────────────────────────────────────────────────────────┘
5.7 The interaction with TDS
A point that catches service businesses hard.
TDS ALREADY REDUCES WHAT YOU MUST PAY IN INSTALMENTS
A consultancy invoices Rs 10,000,000 in a year, and its
clients withhold TDS on every payment.
Estimated tax for the year Rs 1,000,000
TDS expected to be withheld Rs 800,000
──────────────
Net tax to cover by instalments Rs 200,000
Paying full instalments on the gross estimate would
massively overpay — the state is already collecting
most of it at source.
┌──────────────────────────────────────────────────────┐
│ Estimate the TAX, then subtract the TDS you expect │
│ to suffer, and pay instalments on the REMAINDER. │
│ │
│ Businesses whose receipts are almost entirely │
│ TDS-covered may owe little or nothing by │
│ instalment — but they must still FILE the │
│ estimated return if required. [R] │
└──────────────────────────────────────────────────────┘Formulas from this week
Estimated tax = projected taxable income × rate [R]
Net instalment base
= estimated tax − expected TDS
Instalment n payment
= (cumulative % due by n × current estimate)
− amounts already paid [R]
Safe-harbour test
no interest if: paid ≥ safe margin × actual tax [R]
Shortfall interest (approximate)
≈ shortfall × rate × (months outstanding ÷ 12) [R]
Annualising a part-year result
annualised = part-year figure × (12 ÷ months elapsed)What you should be able to do now
- Explain why advance collection exists and what it costs the taxpayer.
- Lay out the instalment mechanic across the fiscal year.
- Apply the safe-harbour test and compute shortfall interest.
- Explain the asymmetry between under- and over-estimating.
- Revise an estimate mid-year from half-year actuals and compute the correct next instalment.
- Build a first-year estimate with no history.
- Net expected TDS out of the instalment base.
Next week: VAT — the return you file every cycle, and the reconciliation that has to hold before the annual return will.
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