Property maths you can check yourself

Free calculators

Affordability Your maximum purchase price under the bank's rules, and the upfront capital it takes.

Each one runs the full calculation on the page, free. Tell us where to send the links, or WhatsApp us for the one you need now.

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Who we are

We are JNA Investments, a team under JNA Real Estate, and we help you and your family manage your wealth and investments in Singapore real estate. These calculators run the arithmetic we use in a consultation, so you can check the numbers before you speak to anyone.

  • Christian Oh

    Co-founder of JNA Sales Force

    Leads the investment side: multi-property scaling, commercial underwriting and the structural side of asset progression. He came into the industry after watching his own family lose money on advice nobody explained, which is why the working is always shown.

  • Grace Cheong

    Director of JNA Investments

    Directs the investments team, which has close to ten years' track record in the Singapore market. She works across mass-market and investment homes, landed included, and positions clients for the long term rather than for a transaction today.

  • Evelyn Kang

    Portfolio Strategist

    Heads her own team across consumer sales and investment advisory, and trains new agents through their exams. She came to property from a corporate career at Singapore Airlines.

  • Zac Teo

    Portfolio Strategist

    Works with families on portfolio strategy: what to hold, what to move and when. He came into real estate from technology sales, and argues from the data.


Talk to us

Send us the numbers you are working with and we will tell you how we read them. A result you did not expect is usually the best place to start.

WhatsApp us

Our office is at 62 Ubi Road 1, Oxley Bizhub 2, Singapore 408734.

Get the calculators, free

Tell us where to send the links. Every calculator gives the full result on the page, with nothing held back.

WhatsApp us