is he born in UK?

need more information before anyone comment on your circumstances..
what income document did you showed?
what is the exact wording for refusal?
since you already applied for appeal and providing accountant letter to prove your point, didn't you enclosed the same letter with the initial application?

Unfortunately... yes http://www.ukba.homeoffice.gov.uk/visas-immigration/visiting/general/apply/ "You should think carefully before applying for a long-term visit visa. We may refuse the visa or issue it for a shorter period than you have applied for (if, for example, the evidence that you provide d...

expenses will be never included into earnings.
You need to achieve required income band by sum of gross salary and gross dividend...

if you baby born in UK, he/she will be eligible of BC once you get ILR.
If the birth happen outside UK, the usual dependant rule will apply...

for dividend vouchers, google it... you need to sign and preferably stamp it..
Payslips, if is in usual UK format, no need to signed by accountant...

One single bank draft will be OK...

you can re-apply if UKBA sent back the application as invalid.
However, you may need to update previous earning and maintenance fund proof...

UKBA will return the application as invalid and refund the fee through cheque.

They will keep the old one and issue a new one with updated expiry date....

signed and its now at 169....

there shouldn't be any problem but letter from employer regarding this discrepancy is highly recommended... to avoid delays and the stress...

2. £600 for last 90 days provided you are living in UK for 12 months or more
3. Copy of your passport (usually first and last page) and copy of your visa / BRP

doesn't matter. This criteria is for main applicant...

£600 for last 90 days provided you are living in UK for more than 12 months...

how did you raised invoice against your teaching work? did you registered yourself as self-employed with HMRC?

Technically, not necessary... you may have a directors loan on the top of your dividend...

Nope, because their intention to travel UK is not tourism. Nowadays, the turn around time for T1 G dependant visa is approx 4-5 weeks. If you are applying late May, you can expect the passport and BRP for your dependants early July. On a side note, do you know the new visa fees for T1G dependants ap...

Yes. You can...

Thats correct...

They will disregard the just the "advance" amount stated on payslip...

Only self employed calculation... assuming you will provide payslip/employer letter and bank statement to prove earnings from employment...

since you have a very good term with your employer, you can ask for a bonus to compensate your shortfall... bonuses can safely included into previous earnings for visa application...

You are not paying any tax on this advance..... the tax deducted at source is just the one supposed to be on the top of your future salary...
In other words, when your future salary will be reduced to adjust this "advance", your tax outgoing for that month will also reduce accordingly.

they will keep it only if your application is approved. otherwise, BRP will be returned to you...