Work faster every day

Calculate inside amount fields

Type an arithmetic expression where the final number belongs.

Finish small calculations without leaving the field or opening another application.

ImplementedEnter expressions such as 122+122 or 222+22*(12+2) directly in calculable numeric inputs.

See a Fastbooks demo Discuss your workflow

Without this workflow

The problem

Amount entry no longer requires copying results back from a separate calculator.

With Fastbooks

The controlled result

Calculable numeric inputs resolve supported expressions on Enter or blur and report invalid drafts inline.

Demonstration sequence

Show the workflow from evidence to outcome.

A feature page should make the user action, product transformation, review decision and accounting consequence visible in order.

1
Focus a calculable amount field
2
Type an arithmetic expression
3
Press Enter
4
Continue with the resolved value
End on the retained accounting or review outcome, not on a decorative success screen.

Evidence gate

What must be proven before broad advertising.

Implementation is not the same as commercial proof. These checks define what representative validation must support.

Expression parser coverage
Decimal and negative-value rules
Invalid-expression recovery
Document-field integration

Fastbooks product doctrine

Prepare intelligently. Review explicitly. Keep one accounting authority.

Fastbooks may capture, classify and prepare work from different sources. Official numbering, posting, correction, reversal and reporting must still pass through the existing canonical owners and permission boundaries.

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