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Plinth

Sinking fund forecast software · Australia

A surveyor's forecast is a photograph of one day. Plinth is the same engineering, kept running — so the number is true on the day you need it, not the day it was written.

One

Every long-life asset gets a line: what it costs to replace or service in today’s dollars, how often that comes round, and when it was last done. That’s the whole model — no black box, no proprietary index you can’t interrogate.

Because it’s a register and not a report, it’s editable. Change a cost, add an asset your building actually has, mark a job done — the forecast recomputes on the spot.

14 assets · $2.9m in today’s dollars · Harbour Court

Two

Every work is escalated to the dollars of the year it falls due, at 3.5% a year. This is the single thing a static plan gets most wrong.

Today
$100k
In 5 years
$119k
In 10 years
$141k
In 15 years
$168k

the same $100,000 job, four different years

Three

Draw the works against the fund and the verdict is arithmetic: the year it breaches, how deep, and the flat levy that would have held it. No percentage rule of thumb.

02032

Four

The asset register

Every common-property item with its cost and renewal cycle — the backbone of the plan.

A live fund forecast

The maintenance fund projected year by year, with the contribution needed to keep it solvent.

Renewals & compliance

Track essential-safety and certificate expiries so nothing lapses between meetings.

A document vault

Plans, certificates, warranties and insurances kept with the building they belong to.

Works that feed back

When a job is quoted and done, the plan updates — it never drifts from reality.

A downloadable report

A clean, current plan to table at the AGM, generated on demand.

Five

Quotes update the plan
Accept a quote and the real figure replaces the estimate — the whole forecast recalculates.
Actual vs forecast
Track what’s actually been spent against the plan, so drift shows up early.
Always AGM-ready
The plan is never out of date, so the number you table is the number the system has kept live.
6 months to 10 years
Near-term operational windows and long-term capital, on one screen.

Six

The maths is the same everywhere — only the terminology changes. Plinth uses the right words for your jurisdiction.

NSW

Capital works fund

The 10-year capital works fund plan, kept live between reviews.

VIC

Maintenance plan & fund

The maintenance plan and maintenance-fund forecast Tier 1 and Tier 2 owners corporations need under the Owners Corporations Act 2006.

QLD

Sinking fund forecast

The sinking fund forecast, on the same engine — only the name differs.

Seven

Strata & OC managers

One portfolio, every building’s plan current — and committee members who can see it without ringing you.

Committee members

A plan you can actually read, and the confidence the fund is set right before you vote on levies.

Building managers

Renewals, compliance and works in one place, tied to the plan that funds them.

Eight

Plinth signs you in with a one-time code emailed to your address, so there’s no password to steal, reuse or phish — every sign-in is its own verification step. Plan data is isolated per owners corporation, and the number of signed-in devices is capped per account.

Questions

What is sinking fund forecast software?
It's software that projects a strata building's long-term capital works and the contributions needed to pay for them, and keeps that forecast current as costs, conditions and works change — rather than a one-off PDF that goes stale.
What is maintenance plan software?
Software that builds and maintains an owners corporation's maintenance plan — the schedule of major works and the maintenance fund needed to pay for them — and keeps it current as the building changes, rather than a static plan reviewed every few years.
Does it replace a quantity surveyor?
It complements one. A QS sets credible baseline costs; Plinth keeps the forecast live between reviews, tracks actual spend against it, and updates the plan when quotes are accepted. For a major rebuild you'll still want professional advice.
Does this meet the Victorian maintenance plan requirement?
Plinth produces the maintenance plan and maintenance-fund forecast that Tier 1 and Tier 2 owners corporations need under the Owners Corporations Act 2006, and keeps it live. Smaller owners corporations can use it voluntarily — the building ages the same regardless of tier.
Is a maintenance plan the same as a sinking fund?
It's the same idea. Victoria calls it a maintenance plan and maintenance fund; NSW calls the fund the capital works fund; Queensland calls it a sinking fund. Plinth handles the right terminology for your state.
Does it work in NSW, VIC and QLD?
Yes. The same forecast underlies the NSW capital works fund plan, the VIC maintenance plan and the QLD sinking fund forecast — only the name differs. Plinth models the fund whatever your state calls it.

Plinth prepares the plan on published cost data. When works fall due we can manage them — competitively tendered, at arm’s length from every contractor. The plan is never a sales document for the works.