Assay
Clarity  ·  9 methods  ·  Free

From cash flows
to confiden$e,
in seconds.

Assay runs all nine standard investment appraisal methods at once, explains every result in plain English and works beautifully on any device.

Start appraising — it's freeHow it works →

Trusted by students, founders and analysts. Zero reported errors.

What You Get

Not just numbers. Verdicts.

Every result includes a plain-English explanation so you always know what the number actually means.

Net Present ValueNPV

$52,750

The investment is expected to create value after covering the required return.
Payback PeriodPP

3 years and 4 months

The investment recovers its initial cost within the submitted cash flow period.
Internal Rate of ReturnIRR

7.2%

IRR falls below the required return of 12%, so the project does not meet the hurdle rate.

Example outputs only. Run your own numbers →

NPVNet Present Value
IRRInternal Rate of Return
MIRRModified IRR
PPPayback Period
DPPDiscounted Payback Period
ARRAccounting Rate of Return
PIProfitability Index
SASensitivity Analysis
BEABreak-even Analysis
NPVNet Present Value
IRRInternal Rate of Return
MIRRModified IRR
PPPayback Period
DPPDiscounted Payback Period
ARRAccounting Rate of Return
PIProfitability Index
SASensitivity Analysis
BEABreak-even Analysis
9Appraisal methods
100%Free to calculate
<100msCalculation time
0Reported errors

Why Assay

Built to fix what every other tool gets wrong.

Accuracy

Verified against textbooks

Every method is cross-checked against textbook (ACCA) examples and industry-standard finance principles. Our accuracy is rooted in financial mathematics, not claimed.

Coverage

All 9 methods in one unified flow

NPV, IRR, MIRR, Payback, Discounted Payback, ARR, PI, Sensitivity Analysis, and Break-even. No tab-switching. No fragmented tools.

Clarity

Every result explained in plain English

A number without context is just noise. Assay explains what the output means, not just what it is.

Design

Built for 2026, not 2009

Every competitor looks like it was abandoned a decade ago. Assay is fast, responsive, and designed to inspire confidence from the first second.

Ready to do the numbers?

Free to use. All nine methods. Results in seconds.