AI agents for business finance: what they can and can't do
What AI agents can do in bookkeeping, close, collections and compliance today, where a person must stay in charge, and how to judge a product.
The short answer
A sinking fund means working out the total of each future immigration fee for every family member, dividing it by the months until it is due, and saving that amount monthly in a separate account. For example, UK indefinite leave to remain costs £3,226 per person from 8 April 2026, so a family of four needs £12,904, or about £538 a month if saved over 24 months; add a margin because fees usually rise.
Immigration fees are among the largest bills a Nigerian family abroad will face, and they arrive on fixed dates you can see years ahead. That makes them ideal for a sinking fund: small, regular savings for one known future cost. Families that do this rarely have to borrow at renewal time; families that do not often end up on credit cards or loans from relatives.
Step 1: list every fee, for every person
Start with your visa expiry dates and the next step for each family member: extension, settlement, citizenship. Then look up the fees on the official government page. Examples from official pages checked in October 2026:
| Country | Fee | Amount | Source |
|---|---|---|---|
| UK | Indefinite leave to remain (in the UK), per person | £3,226 | Home Office fees table, 8 April 2026 |
| UK | Immigration health surcharge, most applicants | £1,035 per year | GOV.UK |
| UK | Naturalisation, adult (including £130 ceremony fee) | £1,839 | Home Office fees table, 8 April 2026 |
| Canada | Sponsoring a spouse or partner (including RPRF) | $1,260 | IRCC fee list |
| Canada | Biometrics | $85 per person, $170 family maximum | IRCC fee list |
| US | Form I-90 (replace or renew green card) | $465 | 8 CFR 106.2 |
| US | Form I-751 (remove conditions on residence) | $750 | 8 CFR 106.2 |
The UK health surcharge is charged for each year of the visa, paid up front, so a three-year visa means three years of surcharge at once: £3,105 at the main rate. GOV.UK sets a lower £776 rate for some groups, such as students and under-18s, and exempts Health and Care Worker visa holders and their dependants.
Step 2: divide by the months you have
A worked example
Example only. Emeka, his wife and two children will be eligible for UK settlement in 24 months. At the current fee, four ILR applications cost 4 x £3,226 = £12,904. Divided over 24 months, that is about £538 a month. Because fees have risen in recent years (the Home Office table shows ILR was £3,029 before April 2026), he adds 10% and saves £592 a month.
| Line | Amount (example) |
|---|---|
| ILR fee x 4 people | £12,904 |
| Monthly over 24 months | about £538 |
| Plus 10% margin | about £592 a month |
| Total saved after 24 months | about £14,208 |
If the fee does not rise, the extra goes towards Life in the UK tests (£50 each) or the next step, naturalisation.
Step 3: keep it separate and hard to touch
- Use a separate savings account or balance labelled for the purpose.
- Set up a standing order on payday so it happens before anything else.
- Do not count this money in your emergency fund. Our guide to sizing a migrant's emergency fund treats them as different pots.
- Do not lend it out, including to family, and do not put it in an ajo that pays out at the wrong time.
Plan around the costs people forget
- Priority services. The UK lists £500 for priority and £1,000 for super priority settlement decisions outside the UK. Do not plan to need them.
- Documents from Nigeria. Birth certificates, police certificates, translations and courier fees. Some need to be requested months ahead.
- Passport renewals for the children before the application, if their Nigerian or other passports are close to expiry.
- Time off work for biometrics appointments and tests.
- Proof of funds. Some routes ask you to show savings held for a period. See using a Nigerian account as proof of funds at renewal.
Review the fund every year
Fee tables change, family circumstances change, and eligibility dates move if you spend long periods outside the country. Once a year, ideally when the new fee table is published, recheck three things: the current fee for each person's next application, the date each one falls due, and whether a new family member, such as a baby born abroad, needs adding. Then reset the monthly amount. A fund that is reviewed annually stays close to the real figure; one set up once and forgotten is often several hundred pounds short by the time it is needed.
When two big fees collide
Families often find a renewal for one parent and settlement for another due within months of each other. Put both on one timeline and save for the earlier one first, then continue the same monthly figure for the second. If the total is impossible, look at fee waivers or reductions where they exist: in the US, 8 CFR 106.3 lists N-400, I-90 and I-751 among fees that can be waived for inability to pay, and the N-400 has a reduced $380 fee for lower-income households. For the next stage, see planning the money for a citizenship application.
Where Pryme fits
A Pryme account holds pounds, dollars, euros and naira, so you can keep an immigration fund in its own currency balance, away from spending money. The Personal Assistant can set a monthly reminder and track progress towards the target; nothing moves without your approval.
Questions people ask
How much does ILR cost for a family of four?
At £3,226 per person (from 8 April 2026), four applications cost £12,904, before tests and document costs.
How much should I save each month for visa renewal?
Add up all fees for every family member, divide by the months until they are due, and add a margin of about 10% for fee rises.
Can I pay UK visa fees in instalments?
Fees are generally paid in full when you apply, which is why saving in advance matters.
Is the immigration health surcharge paid every year?
It is charged per year of the visa but paid up front: a three-year visa at the main rate costs £3,105 at once.
Sources
- Home Office immigration and nationality fees: 8 April 2026 · accessed Oct 2026
- GOV.UK: Pay for UK healthcare as part of your immigration application · accessed Oct 2026
- IRCC: Fee list · accessed Oct 2026
- eCFR: 8 CFR 106.2 Fees · accessed Oct 2026
- eCFR: 8 CFR 106.3 Fee waivers · accessed Oct 2026
This article is general information, not financial, legal or tax advice. Products described are provided under the terms on this site and are subject to regulation and eligibility.