Annual gross income from employment or profession: 100k
Annual gross income of spouse/partner: 82,500
Is this inclusive of health and bonuses or are they on top of that?
Monthly take-home pay: €7k combined
Assuming for a moment that your €182.5k doesn't include BIK, your net take home is €9.9k plus €280 in child benefit.
After 20% pension, the net is still €8.1k, soon to increase to €8.25k with budget changes. Your ESPP and APSS are just saving mechanisms so do not reduce your net per say.
With €100k knocked off your home loan, you will have mortgage/loan of €1250 and childcare of €1k. That leaves a lot of disposable income for everything else so live comfortably and enjoy it. Use any excess to reduce the mortgage.
Very clear you should use this to pay down the home improvement loan and retain the €20k from ESPP as an emergency fund
Spouse has €20k in employers share purchase scheme
Most ESPP are run on 6/12 month cycles with a 15% discount on 10% of salary. The most your spouse can have tied up is €4k/8k. To have €20k means she has just retained the shares for 2.5 years so should sell all immediately. Treat ESPP as a bonus, you get 15% of 10% or an additional 1.5% salary plus a bit extra if share price increases.
€42k in shares in my employer between bonus share purchase scheme (no PAYE on bonus if left in the scheme for 3 years) and unvested RSUs.
Like the ESPP, you should treat this as additional income and execute same day sale on RSU vesting and for the APSS sell immediately on the 3 year mark. Do not hold them any longer than necessary to get the tax benefit
Value of pension fund: €334k combined, we both make maximum contributions
You are way ahead of the curve with pension funding for your age. Keep up the 20% contributions but be confident that if for any reason you need to reduce it then do so because you are in a great position.
And just in case you aren't doing it, the 20% limit is based on gross income which includes BIK, bonuses, the discount on ESPP, the value of vested RSU's (not the gains).